best-of-python

🏆 A ranked list of awesome Python open-source libraries and tools. Updated weekly.

Last updated Jul 7, 2026

4.5k

Stars

336

Forks

Issues

Stars/day

Attention Score

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Topics

#awesome #awesome-list #best-of #best-of-list #cli #collections #data-structures #library #pypi #python #python-framework #python-libraries #python-library #python-utilities #utilities #utility-library

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README

Best-of Python

🏆 A ranked list of awesome Python open-source libraries & tools. Updated weekly.

This curated list contains 400 awesome open-source projects with a total of 2.1M stars grouped into 28 categories. All projects are ranked by a project-quality score, which is calculated based on various metrics automatically collected from GitHub and different package managers. If you like to add or update projects, feel free to open an issue, submit a pull request, or directly edit the projects.yaml. Contributions are very welcome!

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Data Serialization 16 projects
Data Containers & Dataframes 31 projects
Data Structures 15 projects
Data Validation 15 projects
Algorithms & Design Patterns 4 projects
Date & Time Utilities 9 projects
File & Path Utilities 10 projects
Compatiblity 7 projects
Cryptography 7 projects
Infrastructure & DevOps 20 projects
Process Utilities 4 projects
Asynchronous Programming 7 projects
Configuration 9 projects
CLI Development 20 projects
Development Tools 1 projects
Data Caching 6 projects
GUI Development 10 projects
Computer & Machine Vision 2 projects
Machine Learning & Data Engineering 1 projects
Text Data 12 projects
Web Development 1 projects
Database Clients 64 projects
Data Loading & Extraction 32 projects
Data Pipelines & Streaming 44 projects
File Formats 3 projects
Code Inspection 4 projects
General Utilities 15 projects
Python Implementations 6 projects
Others 21 projects

Explanation

🥇🥈🥉 Combined project-quality score
⭐️ Star count from GitHub
🐣 New project (less than 6 months old)
💤 Inactive project (6 months no activity)
💀 Dead project (12 months no activity)
📈📉 Project is trending up or down
➕ Project was recently added
❗️ Warning (e.g. missing/risky license)
👨‍💻 Contributors count from GitHub
🔀 Fork count from GitHub
📋 Issue count from GitHub
⏱️ Last update timestamp on package manager
📥 Download count from package manager
📦 Number of dependent projects
Pandas related project

Data Serialization

protobuf (🥇53 · ⭐ 71K) - Protocol Buffers - Googles data interchange format. BSD-3

GitHub (👨‍💻 1.5K · 🔀 16K · 📥 110M · 📦 990K · 📋 7K - 3% open · ⏱️ 09.07.2026):

git clone https://github.com/protocolbuffers/protobuf

PyPi (📥 800M / month · 📦 12K · ⏱️ 11.06.2026):

pip install protobuf

Conda (📥 32M · ⏱️ 13.06.2026):

conda install -c conda-forge protobuf

npm (📥 22M / month · 📦 3.8K · ⏱️ 24.02.2026):

npm install google-protobuf

flatbuffers (🥇44 · ⭐ 26K) - FlatBuffers: Memory Efficient Serialization Library. Apache-2

GitHub (👨‍💻 780 · 🔀 3.6K · 📥 2.2M · 📦 200K · 📋 2.8K - 8% open · ⏱️ 18.06.2026):

git clone https://github.com/google/flatbuffers

PyPi (📥 96M / month · 📦 700 · ⏱️ 19.12.2025):

pip install flatbuffers

Conda (📥 2.2M · ⏱️ 22.12.2025):

conda install -c conda-forge flatbuffers

npm (📥 26M / month · 📦 290 · ⏱️ 24.09.2025):

npm install flatbuffers

marshmallow (🥈41 · ⭐ 7.2K) - A lightweight library for converting complex objects to and from.. MIT

GitHub (👨‍💻 230 · 🔀 700 · 📦 230K · 📋 1.3K - 10% open · ⏱️ 06.07.2026):

git clone https://github.com/marshmallow-code/marshmallow

PyPi (📥 120M / month · 📦 2.8K · ⏱️ 03.04.2026):

pip install marshmallow

Conda (📥 4.2M · ⏱️ 28.04.2026):

conda install -c conda-forge marshmallow

simplejson (🥈38 · ⭐ 1.7K) - simplejson is a simple, fast, extensible JSON encoder/decoder for.. MIT

GitHub (👨‍💻 50 · 🔀 360 · 📥 8.4K · 📦 150K · 📋 220 - 8% open · ⏱️ 06.07.2026):

git clone https://github.com/simplejson/simplejson

PyPi (📥 58M / month · 📦 2.9K · ⏱️ 24.04.2026):

pip install simplejson

Conda (📥 5.2M · ⏱️ 25.04.2026):

conda install -c conda-forge simplejson

orjson (🥈37 · ⭐ 8.2K) - Fast, correct Python JSON library supporting dataclasses, datetimes,.. Apache-2

GitHub (👨‍💻 24 · 🔀 300 · 📦 220K · ⏱️ 06.05.2026):

git clone https://github.com/ijl/orjson

PyPi (📥 190M / month · 📦 6.3K · ⏱️ 06.05.2026):

pip install orjson

Conda (📥 6.1M · ⏱️ 13.05.2026):

conda install -c conda-forge orjson

dill (🥈37 · ⭐ 2.4K) - serialize all of Python. BSD-3

GitHub (👨‍💻 49 · 🔀 190 · 📥 290K · 📦 250K · 📋 560 - 35% open · ⏱️ 05.07.2026):

git clone https://github.com/uqfoundation/dill

PyPi (📥 190M / month · 📦 4.2K · ⏱️ 19.01.2026):

pip install dill

Conda (📥 19M · ⏱️ 19.01.2026):

conda install -c conda-forge dill

jsonpickle (🥈37 · ⭐ 1.3K) - Python library for serializing any arbitrary object graph into.. BSD-3

GitHub (👨‍💻 88 · 🔀 180 · 📦 50K · 📋 350 - 8% open · ⏱️ 07.07.2026):

git clone https://github.com/jsonpickle/jsonpickle

PyPi (📥 19M / month · 📦 1.6K · ⏱️ 28.05.2026):

pip install jsonpickle

Conda (📥 2.4M · ⏱️ 28.05.2026):

conda install -c conda-forge jsonpickle

cloudpickle (🥉32 · ⭐ 1.9K · 💤) - Extended pickling support for Python objects. BSD-3

GitHub (👨‍💻 76 · 🔀 190 · 📥 160 · 📋 290 - 37% open · ⏱️ 05.11.2025):

git clone https://github.com/cloudpipe/cloudpickle

PyPi (📥 140M / month · 📦 2.3K · ⏱️ 03.11.2025):

pip install cloudpickle

Conda (📥 34M · ⏱️ 09.12.2025):

conda install -c conda-forge cloudpickle

python-rapidjson (🥉29 · ⭐ 530) - Python wrapper around rapidjson. MIT

GitHub (👨‍💻 25 · 🔀 53 · 📦 7.9K · 📋 120 - 13% open · ⏱️ 07.07.2026):

git clone https://github.com/python-rapidjson/python-rapidjson

PyPi (📥 4.9M / month · 📦 270 · ⏱️ 07.12.2025):

pip install python-rapidjson

Conda (📥 4.7M · ⏱️ 03.02.2026):

conda install -c conda-forge python-rapidjson

srsly (🥉29 · ⭐ 480) - Modern high-performance serialization utilities for Python (JSON,.. MIT

GitHub (👨‍💻 16 · 🔀 38 · 📥 1.5K · 📦 69K · 📋 37 - 16% open · ⏱️ 23.03.2026):

git clone https://github.com/explosion/srsly

PyPi (📥 20M / month · 📦 270 · ⏱️ 23.03.2026):

pip install srsly

Conda (📥 2.6M · ⏱️ 24.03.2026):

conda install -c conda-forge srsly

hickle (🥉27 · ⭐ 500) - a HDF5-based python pickle replacement. MIT

GitHub (👨‍💻 29 · 🔀 70 · 📦 1.1K · 📋 120 - 5% open · ⏱️ 30.04.2026):

git clone https://github.com/telegraphic/hickle

PyPi (📥 65K / month · 📦 39 · ⏱️ 30.03.2024):

pip install hickle

Conda (📥 41K · ⏱️ 22.04.2025):

conda install -c conda-forge hickle

rtoml (🥉24 · ⭐ 400 · 💤) - A fast TOML library for python implemented in rust. MIT

GitHub (👨‍💻 16 · 🔀 30 · 📦 940 · 📋 27 - 37% open · ⏱️ 19.10.2025):

git clone https://github.com/samuelcolvin/rtoml

PyPi (📥 860K / month · 📦 160 · ⏱️ 19.10.2025):

pip install rtoml

Show 4 hidden projects...

msgpack (🥉35 · ⭐ 2.1K) - MessagePack serializer implementation for Python.. ❗Unlicensed
pyasn1 (🥉35 · ⭐ 260 · 💀) - Generic ASN.1 library for Python. BSD-2
ultrajson (🥉34 · ⭐ 4.5K) - Ultra fast JSON decoder and encoder written in C with Python.. ❗Unlicensed
pysimdjson (🥉23 · ⭐ 770 · 💀) - Python bindings for the simdjson project. ❗Unlicensed

Data Containers & Dataframes

General-purpose data containers as well as utilities & extensions for pandas.

pandas (🥇54 · ⭐ 49K) - Flexible and powerful data analysis / manipulation library for.. BSD-3

GitHub (👨‍💻 4.2K · 🔀 20K · 📥 4.2M · 📦 2.9M · 📋 29K - 10% open · ⏱️ 09.07.2026):

git clone https://github.com/pandas-dev/pandas

PyPi (📥 730M / month · 📦 130K · ⏱️ 28.06.2026):

pip install pandas

Conda (📥 87M · ⏱️ 12.05.2026):

conda install -c conda-forge pandas

polars (🥇46 · ⭐ 39K) - Extremely fast Query Engine for DataFrames, written in Rust. MIT

GitHub (👨‍💻 740 · 🔀 2.9K · 📥 29K · 📦 35K · 📋 13K - 21% open · ⏱️ 09.07.2026):

git clone https://github.com/pola-rs/polars

PyPi (📥 57M / month · 📦 6.9K · ⏱️ 30.06.2026):

pip install polars

h5py (🥇43 · ⭐ 2.2K) - HDF5 for Python -- The h5py package is a Pythonic interface to the HDF5.. BSD-3

GitHub (👨‍💻 220 · 🔀 560 · 📥 6.8K · 📦 360K · 📋 1.7K - 19% open · ⏱️ 07.07.2026):

git clone https://github.com/h5py/h5py

PyPi (📥 40M / month · 📦 11K · ⏱️ 06.03.2026):

pip install h5py

Conda (📥 27M · ⏱️ 07.04.2026):

conda install -c conda-forge h5py

xarray (🥈40 · ⭐ 4.2K) - N-D labeled arrays and datasets in Python. Apache-2

GitHub (👨‍💻 620 · 🔀 1.3K · 📦 45K · 📋 5.3K - 25% open · ⏱️ 09.07.2026):

git clone https://github.com/pydata/xarray

PyPi (📥 19M / month · 📦 5.7K · ⏱️ 13.04.2026):

pip install xarray

Conda (📥 16M · ⏱️ 13.04.2026):

conda install -c conda-forge xarray

zarr (🥈39 · ⭐ 2K) - An implementation of chunked, compressed, N-dimensional arrays for Python. MIT

GitHub (👨‍💻 180 · 🔀 420 · 📦 8.6K · 📋 1.6K - 31% open · ⏱️ 09.07.2026):

git clone https://github.com/zarr-developers/zarr-python

PyPi (📥 9.3M / month · 📦 2.1K · ⏱️ 05.05.2026):

pip install zarr

Conda (📥 5.9M · ⏱️ 05.05.2026):

conda install -c conda-forge zarr

pandera (🥈38 · ⭐ 4.4K) - A light-weight, flexible, and expressive statistical data testing.. MIT

GitHub (👨‍💻 200 · 🔀 410 · 📦 3.7K · 📋 1.1K - 36% open · ⏱️ 07.07.2026):

git clone https://github.com/pandera-dev/pandera

PyPi (📥 8.1M / month · 📦 530 · ⏱️ 29.06.2026):

pip install pandera

Conda (📥 120K · ⏱️ 01.07.2026):

conda install -c conda-forge pandera-core

Bottleneck (🥈36 · ⭐ 1.2K) - Fast NumPy array functions written in C. BSD-2

GitHub (👨‍💻 42 · 🔀 110 · 📦 60K · 📋 280 - 17% open · ⏱️ 03.07.2026):

git clone https://github.com/pydata/bottleneck

PyPi (📥 10M / month · 📦 620 · ⏱️ 08.09.2025):

pip install Bottleneck

Conda (📥 7.2M · ⏱️ 10.11.2025):

conda install -c conda-forge bottleneck

numexpr (🥈35 · ⭐ 2.5K) - Fast numerical array expression evaluator for Python, NumPy, Pandas,.. MIT

GitHub (👨‍💻 87 · 🔀 220 · 📥 4K · 📦 100K · 📋 410 - 0% open · ⏱️ 24.06.2026):

git clone https://github.com/pydata/numexpr

PyPi (📥 15M / month · 📦 1.2K · ⏱️ 13.10.2025):

pip install numexpr

Conda (📥 14M · ⏱️ 11.05.2026):

conda install -c conda-forge numexpr

PyTables (🥈34 · ⭐ 1.4K) - A Python package to manage extremely large amounts of data. BSD-3

GitHub (👨‍💻 140 · 🔀 280 · 📥 220 · 📋 760 - 20% open · ⏱️ 09.07.2026):

git clone https://github.com/PyTables/PyTables

PyPi (📥 2.4M / month · 📦 1.8K · ⏱️ 01.03.2026):

pip install tables

Conda (📥 13M · ⏱️ 29.05.2026):

conda install -c conda-forge pytables

Modin (🥈33 · ⭐ 10K · 📈) - Modin: Scale your Pandas workflows by changing a single line.. Apache-2

GitHub (👨‍💻 140 · 🔀 670 · 📥 210K · 📦 2.3K · 📋 4.4K - 16% open · ⏱️ 10.02.2026):

git clone https://github.com/modin-project/modin

PyPi (📥 1.7M / month · 📦 66 · ⏱️ 02.10.2025):

pip install modin

Conda (📥 960K · ⏱️ 22.04.2025):

conda install -c conda-forge modin-core

TinyDB (🥈33 · ⭐ 7.5K) - TinyDB is a lightweight document oriented database optimized for your.. MIT

GitHub (👨‍💻 97 · 🔀 600 · 📦 16K · 📋 330 - 3% open · ⏱️ 28.05.2026):

git clone https://github.com/msiemens/tinydb

PyPi (📥 4M / month · 📦 690 · ⏱️ 12.10.2024):

pip install tinydb

Conda (📥 940K · ⏱️ 22.04.2025):

conda install -c conda-forge tinydb

datasketch (🥈33 · ⭐ 2.9K) - MinHash, LSH, LSH Forest, Weighted MinHash, HyperLogLog,.. MIT

GitHub (👨‍💻 39 · 🔀 320 · 📥 40 · 📦 2.6K · 📋 180 - 29% open · ⏱️ 05.07.2026):

git clone https://github.com/ekzhu/datasketch

PyPi (📥 6.1M / month · 📦 220 · ⏱️ 05.07.2026):

pip install datasketch

Vaex (🥉31 · ⭐ 8.5K) - Out-of-Core hybrid Apache Arrow/NumPy DataFrame for Python, ML, visualization.. MIT

GitHub (👨‍💻 76 · 🔀 600 · 📥 340 · 📦 1K · 📋 1.3K - 41% open · ⏱️ 05.02.2026):

git clone https://github.com/vaexio/vaex

PyPi (📥 28K / month · 📦 68 · ⏱️ 03.02.2026):

pip install vaex

Conda (📥 600K · ⏱️ 22.04.2025):

conda install -c conda-forge vaex

StaticFrame (🥉28 · ⭐ 480) - Immutable and statically-typeable DataFrames with runtime type and.. MIT

GitHub (👨‍💻 30 · 🔀 38 · 📦 32 · 📋 750 - 4% open · ⏱️ 07.07.2026):

git clone https://github.com/InvestmentSystems/static-frame

PyPi (📥 16K / month · 📦 6 · ⏱️ 07.07.2026):

pip install static-frame

Conda (📥 630K · ⏱️ 07.07.2026):

conda install -c conda-forge static-frame

pickleDB (🥉24 · ⭐ 1.1K) - pickleDB is an in memory key-value store using Pythons orjson module.. BSD-3

GitHub (👨‍💻 17 · 🔀 130 · 📦 3.4K · 📋 90 - 20% open · ⏱️ 10.05.2026):

git clone https://github.com/patx/pickledb

PyPi (📥 31K / month · 📦 8 · ⏱️ 05.01.2026):

pip install pickledb

Pandas Summary (🥉24 · ⭐ 530) - Engine for AI/ML/Data tracking, visualization,.. Apache-2

GitHub (👨‍💻 100 · 🔀 47 · 📋 15 - 40% open · ⏱️ 17.06.2026):

git clone https://github.com/polyaxon/datatile

PyPi (📥 110K / month · 📦 21 · ⏱️ 25.11.2021):

pip install pandas-summary

Show 15 hidden projects...

numpy (🥇51 · ⭐ 32K) - The fundamental package for scientific computing with Python. ❗Unlicensed
Koalas (🥉31 · ⭐ 3.4K · 💀) - Koalas: pandas API on Apache Spark. Apache-2 spark
Blaze (🥉31 · ⭐ 3.2K · 💀) - NumPy and Pandas interface to Big Data. BSD-3
docarray (🥉31 · ⭐ 3.1K · 💀) - Represent, send, store and search multimodal data. Apache-2
sklearn-pandas (🥉28 · ⭐ 2.9K · 💀) - Pandas integration with sklearn. ❗️Zlib sklearn
swifter (🥉28 · ⭐ 2.6K · 💀) - A package which efficiently applies any function to a pandas.. MIT
datatable (🥉28 · ⭐ 1.9K · 💀) - A Python package for manipulating 2-dimensional tabular data.. MPL-2.0
Pandaral·lel (🥉27 · ⭐ 3.8K · 💀) - A simple and efficient tool to parallelize Pandas.. BSD-3 jupyter
Arctic (🥉27 · ⭐ 3.1K · 💀) - Arctic is a high performance datastore for numeric data. ❗️LGPL-2.1
pandasql (🥉25 · ⭐ 1.3K · 💀) - sqldf for pandas. MIT
bcolz (🥉25 · ⭐ 960 · 💀) - A columnar data container that can be compressed. BSD-3
fletcher (🥉20 · ⭐ 230 · 💀) - Pandas ExtensionDType/Array backed by Apache Arrow. MIT
daffy (🥉18 · ⭐ 58) - Lightweight DataFrame validation decorators for Pandas, Polars, Modin,.. MIT
Bounter (🥉17 · ⭐ 930 · 💀) - Efficient Counter that uses a limited (bounded) amount of memory.. MIT
PandaPy (🥉12 · ⭐ 550 · 💀) - PandaPy has the speed of NumPy and the usability of Pandas 10x to.. MIT

Data Structures

pyrsistent (🥇36 · ⭐ 2.2K) - Persistent/Immutable/Functional data structures for Python. MIT

GitHub (👨‍💻 77 · 🔀 160 · 📦 370K · 📋 190 - 16% open · ⏱️ 31.01.2026):

git clone https://github.com/tobgu/pyrsistent

PyPi (📥 38M / month · 📦 1K · ⏱️ 25.10.2023):

pip install pyrsistent

Conda (📥 22M · ⏱️ 04.10.2025):

conda install -c conda-forge pyrsistent

bidict (🥇34 · ⭐ 1.6K) - The bidirectional mapping library for Python. MPL-2.0

GitHub (👨‍💻 24 · 🔀 69 · 📥 180 · 📦 45K · ⏱️ 07.07.2026):

git clone https://github.com/jab/bidict

PyPi (📥 30M / month · 📦 480 · ⏱️ 18.02.2024):

pip install bidict

Conda (📥 860K · ⏱️ 22.04.2025):

conda install -c conda-forge bidict

multidict (🥇34 · ⭐ 490) - The multidict implementation. Apache-2

GitHub (👨‍💻 65 · 🔀 130 · 📥 2.6K · 📋 190 - 12% open · ⏱️ 06.07.2026):

git clone https://github.com/aio-libs/multidict

PyPi (📥 550M / month · 📦 2.1K · ⏱️ 26.01.2026):

pip install multidict

Conda (📥 26M · ⏱️ 20.02.2026):

conda install -c conda-forge multidict

python-benedict (🥉29 · ⭐ 1.6K) - dict subclass with keylist/keypath support, built-in I/O.. MIT

GitHub (👨‍💻 18 · 🔀 49 · 📥 54 · 📦 2K · 📋 120 - 4% open · ⏱️ 07.07.2026):

git clone https://github.com/fabiocaccamo/python-benedict

PyPi (📥 1.2M / month · 📦 110 · ⏱️ 07.07.2026):

pip install python-benedict

Conda (📥 270K · ⏱️ 22.04.2025):

conda install -c conda-forge python-benedict

python-box (🥉27 · ⭐ 2.8K) - Python dictionaries with advanced dot notation access. MIT

GitHub (👨‍💻 1 · 🔀 120 · 📥 56 · 📋 190 - 18% open · ⏱️ 21.02.2026):

git clone https://github.com/cdgriffith/Box

PyPi (📥 7.3M / month · 📦 590 · ⏱️ 21.02.2026):

pip install python-box

Conda (📥 1.2M · ⏱️ 29.04.2026):

conda install -c conda-forge python-box

janus (🥉27 · ⭐ 960) - Thread-safe asyncio-aware queue for Python. Apache-2

GitHub (👨‍💻 30 · 🔀 53 · 📥 48 · 📋 52 - 21% open · ⏱️ 24.06.2026):

git clone https://github.com/aio-libs/janus

PyPi (📥 6.2M / month · 📦 130 · ⏱️ 13.12.2024):

pip install janus

Conda (📥 63K · ⏱️ 22.04.2025):

conda install -c conda-forge janus

glom (🥉25 · ⭐ 2.2K · 📉) - Pythons nested data operator (and CLI), for all your declarative.. BSD-3

GitHub (👨‍💻 24 · 🔀 76 · 📦 3.5K · 📋 210 - 58% open · ⏱️ 29.06.2026):

git clone https://github.com/mahmoud/glom

PyPi (📦 250 · ⏱️ 29.12.2025):

pip install glom

Conda (📥 65K · ⏱️ 29.12.2025):

conda install -c conda-forge glom

Show 8 hidden projects...

python-sortedcontainers (🥈33 · ⭐ 4K · 💀) - Python Sorted Container Types: Sorted List, Sorted.. Apache-2
anytree (🥈31 · ⭐ 1.1K · 💀) - Python tree data library. Apache-2
ordered-set (🥈31 · ⭐ 230 · 💀) - A mutable set that remembers the order of its entries. One of.. MIT
sqlitedict (🥉29 · ⭐ 1.2K · 💀) - Persistent dict, backed by sqlite3 and pickle, multithread-.. Apache-2
addict (🥉28 · ⭐ 2.5K · 💀) - The Python Dict thats better than heroin. MIT
munch (🥉27 · ⭐ 780 · 💀) - A Munch is a Python dictionary that provides attribute-style access (a.. MIT
immutables (🥉26 · ⭐ 1.2K · 💀) - A high-performance immutable mapping type for Python. Apache-2
cleverdict (🥉15 · ⭐ 100 · 💀) - A JSON-friendly data structure which allows both object attributes.. MIT

Data Validation

pydantic (🥇45 · ⭐ 28K) - Data validation using Python type hints. MIT

GitHub (👨‍💻 780 · 🔀 2.7K · 📥 33 · 📋 5.7K - 9% open · ⏱️ 06.07.2026):

git clone https://github.com/samuelcolvin/pydantic

PyPi (📥 1B / month · 📦 83K · ⏱️ 22.05.2026):

pip install pydantic

Conda (📥 25M · ⏱️ 06.05.2026):

conda install -c conda-forge pydantic

jsonschema (🥇41 · ⭐ 5K) - An implementation of the JSON Schema specification for Python. MIT

GitHub (👨‍💻 120 · 🔀 620 · 📥 1.5K · 📦 840K · 📋 890 - 5% open · ⏱️ 23.06.2026):

git clone https://github.com/Julian/jsonschema

PyPi (📥 530M / month · 📦 9.6K · ⏱️ 07.01.2026):

pip install jsonschema

Conda (📥 49M · ⏱️ 08.01.2026):

conda install -c conda-forge jsonschema

cerberus (🥈35 · ⭐ 3.3K) - Lightweight, extensible data validation library for Python. ISC

GitHub (👨‍💻 67 · 🔀 240 · 📦 18K · 📋 360 - 4% open · ⏱️ 01.01.2026):

git clone https://github.com/pyeve/cerberus

PyPi (📥 6.8M / month · 📦 770 · ⏱️ 06.11.2025):

pip install cerberus

Conda (📥 840K · ⏱️ 22.04.2025):

conda install -c conda-forge cerberus

schema (🥈34 · ⭐ 2.9K) - Schema validation just got Pythonic. MIT

GitHub (👨‍💻 75 · 🔀 220 · 📦 17K · 📋 200 - 52% open · ⏱️ 20.06.2026):

git clone https://github.com/keleshev/schema

PyPi (📥 26M / month · 📦 890 · ⏱️ 11.10.2025):

pip install schema

Conda (📥 660K · ⏱️ 22.04.2025):

conda install -c conda-forge schema

voluptuous (🥈34 · ⭐ 1.8K) - CONTRIBUTIONS ONLY: Voluptuous, despite the name, is a Python data.. BSD-3

GitHub (👨‍💻 110 · 🔀 230 · 📦 21K · 📋 260 - 15% open · ⏱️ 06.07.2026):

git clone https://github.com/alecthomas/voluptuous

PyPi (📥 6.7M / month · 📦 620 · ⏱️ 18.12.2025):

pip install voluptuous

Conda (📥 930K · ⏱️ 19.12.2025):

conda install -c conda-forge voluptuous

validators (🥈34 · ⭐ 1.1K) - Python Data Validation for Humans. MIT

GitHub (👨‍💻 64 · 🔀 180 · 📥 280 · 📦 150K · 📋 190 - 2% open · ⏱️ 14.03.2026):

git clone https://github.com/kvesteri/validators

PyPi (📥 30M / month · 📦 7.6K · ⏱️ 01.05.2025):

pip install validators

Conda (📥 1.5M · ⏱️ 03.05.2025):

conda install -c conda-forge validators

python-email-validator (🥉32 · ⭐ 1.4K) - A robust email syntax and deliverability validation.. Unlicense

GitHub (👨‍💻 28 · 🔀 140 · 📋 110 - 12% open · ⏱️ 26.06.2026):

git clone https://github.com/JoshData/python-email-validator

PyPi (📥 210M / month · 📦 1.2K · ⏱️ 26.08.2025):

pip install email-validator

Conda (📥 2.9M · ⏱️ 26.08.2025):

conda install -c conda-forge email-validator

param (🥉32 · ⭐ 520) - Declarative parameters for robust Python classes and a rich API for.. BSD-3

GitHub (👨‍💻 45 · 🔀 83 · 📥 37 · 📦 18K · 📋 530 - 33% open · ⏱️ 05.07.2026):

git clone https://github.com/holoviz/param

PyPi (📥 2.5M / month · 📦 240 · ⏱️ 09.06.2026):

pip install param

Conda (📥 2.8M · ⏱️ 16.06.2026):

conda install -c conda-forge param

dirty-equals (🥉24 · ⭐ 1K · 💤) - Doing dirty (but extremely useful) things with equals. MIT

GitHub (👨‍💻 20 · 🔀 48 · 📦 1K · 📋 50 - 42% open · ⏱️ 17.11.2025):

git clone https://github.com/samuelcolvin/dirty-equals

PyPi (📥 2.4M / month · 📦 100 · ⏱️ 17.11.2025):

pip install dirty-equals

Conda (📥 140K · ⏱️ 18.11.2025):

conda install -c conda-forge dirty-equals

valideer (🥉20 · ⭐ 260) - Lightweight data validation and adaptation Python library. MIT

GitHub (👨‍💻 11 · 🔀 27 · 📦 80 · 📋 20 - 45% open · ⏱️ 08.07.2026):

git clone https://github.com/podio/valideer

PyPi (📥 6.8K / month · 📦 3 · ⏱️ 20.12.2015):

pip install valideer

Conda (📥 99K · ⏱️ 22.04.2025):

conda install -c conda-forge valideer

Show 5 hidden projects...

schematics (🥉31 · ⭐ 2.6K · 💀) - Python Data Structures for Humans. BSD-3
strictyaml (🥉30 · ⭐ 1.6K · 💀) - Type-safe YAML parser and validator. MIT
validr (🥉17 · ⭐ 220 · 💀) - A simple, fast, extensible python library for data validation. MIT
typical (🥉17 · ⭐ 180 · 💀) - Typical: Fast, simple, & correct data-validation using Python 3 typing. MIT
dataklasses (🥉7 · ⭐ 810 · 💀) - A different spin on dataclasses. ❗Unlicensed

Algorithms & Design Patterns

🔗 python-patterns ( ⭐ 43K) - Collection of design patterns/idioms in Python.

algorithms (🥇32 · ⭐ 26K) - Minimal examples of data structures and algorithms in Python. MIT

GitHub (👨‍💻 220 · 🔀 4.7K · 📦 140 · 📋 190 - 0% open · ⏱️ 25.05.2026):

git clone https://github.com/keon/algorithms

PyPi (📥 1.9K / month · 📦 5 · ⏱️ 18.02.2026):

pip install algorithms

Conda (📥 4.8K · ⏱️ 22.04.2025):

conda install -c conda-forge algorithms

transitions (🥇32 · ⭐ 6.6K · 💤) - A lightweight, object-oriented finite state machine.. MIT

GitHub (👨‍💻 82 · 🔀 560 · 📦 4.4K · 📋 500 - 3% open · ⏱️ 09.09.2025):

git clone https://github.com/pytransitions/transitions

PyPi (📥 2.7M / month · 📦 220 · ⏱️ 02.07.2025):

pip install transitions

Conda (📥 880K · ⏱️ 02.07.2025):

conda install -c conda-forge transitions

Show 1 hidden projects...

PyPattyrn (🥉19 · ⭐ 2.3K · 💀) - A simple library for implementing common design patterns. MIT

Date & Time Utilities

dateparser (🥇39 · ⭐ 2.8K) - python parser for human readable dates. BSD-3

GitHub (👨‍💻 160 · 🔀 500 · 📦 39K · 📋 770 - 45% open · ⏱️ 08.07.2026):

git clone https://github.com/scrapinghub/dateparser

PyPi (📥 45M / month · 📦 1.7K · ⏱️ 15.06.2026):

pip install dateparser

Conda (📥 1.6M · ⏱️ 15.06.2026):

conda install -c conda-forge dateparser

holidays (🥇39 · ⭐ 1.9K) - Open World Holidays Framework. MIT

GitHub (👨‍💻 340 · 🔀 700 · 📥 440 · 📦 27K · 📋 830 - 10% open · ⏱️ 09.07.2026):

git clone https://github.com/vacanza/holidays

PyPi (📥 28M / month · 📦 610 · ⏱️ 06.07.2026):

pip install holidays

Conda (📥 4.6M · ⏱️ 07.07.2026):

conda install -c conda-forge holidays

arrow (🥈38 · ⭐ 9K) - Better dates & times for Python. Apache-2

GitHub (👨‍💻 290 · 🔀 760 · 📦 180K · 📋 550 - 24% open · ⏱️ 30.04.2026):

git clone https://github.com/arrow-py/arrow

PyPi (📥 75M / month · 📦 2.3K · ⏱️ 18.10.2025):

pip install arrow

Conda (📥 13M · ⏱️ 18.10.2025):

conda install -c conda-forge arrow

python-dateutil (🥈36 · ⭐ 2.6K) - Useful extensions to the standard Python datetime features. Apache-2

GitHub (👨‍💻 130 · 🔀 550 · 📥 36K · 📋 870 - 49% open · ⏱️ 19.05.2026):

git clone https://github.com/dateutil/dateutil

PyPi (📥 1.1B / month · 📦 12K · ⏱️ 01.03.2024):

pip install python-dateutil

Conda (📥 100M · ⏱️ 28.06.2025):

conda install -c conda-forge python-dateutil

pendulum (🥉35 · ⭐ 6.7K) - Python datetimes made easy. MIT

GitHub (👨‍💻 130 · 🔀 430 · 📥 4.8K · 📦 40K · 📋 580 - 35% open · ⏱️ 06.07.2026):

git clone https://github.com/sdispater/pendulum

PyPi (📥 71M / month · 📦 1.6K · ⏱️ 30.01.2026):

pip install pendulum

Conda (📥 2.2M · ⏱️ 31.01.2026):

conda install -c conda-forge pendulum

pytz (🥉35 · ⭐ 390) - pytz Python historical timezone library and database. MIT

GitHub (👨‍💻 23 · 🔀 100 · 📥 880 · 📦 2.5M · 📋 100 - 40% open · ⏱️ 04.05.2026):

git clone https://github.com/stub42/pytz

PyPi (📥 520M / month · 📦 16K · ⏱️ 04.05.2026):

pip install pytz

Conda (📥 92M · ⏱️ 04.05.2026):

conda install -c conda-forge pytz

tzlocal (🥉35 · ⭐ 220) - A Python module that tries to figure out what your local timezone is. MIT

GitHub (👨‍💻 31 · 🔀 64 · 📦 220K · 📋 93 - 1% open · ⏱️ 29.06.2026):

git clone https://github.com/regebro/tzlocal

PyPi (📥 200M / month · 📦 2.4K · ⏱️ 29.06.2026):

pip install tzlocal

Conda (📥 6.1M · ⏱️ 29.06.2026):

conda install -c conda-forge tzlocal

Show 2 hidden projects...

isodate (🥉32 · ⭐ 180 · 💀) - ISO 8601 date/time parser. BSD-3
parsedatetime (🥉30 · ⭐ 710 · 💀) - Parse human-readable date/time strings. Apache-2

File & Path Utilities

filesystemspec (🥇40 · ⭐ 1.3K) - A specification that python filesystems should adhere to. BSD-3

GitHub (👨‍💻 330 · 🔀 450 · 📦 300K · 📋 870 - 39% open · ⏱️ 06.07.2026):

git clone https://github.com/fsspec/filesystem_spec

PyPi (📥 790M / month · 📦 3.7K · ⏱️ 16.06.2026):

pip install fsspec

Conda (📥 35M · ⏱️ 16.06.2026):

conda install -c conda-forge fsspec

watchdog (🥈38 · ⭐ 7.4K) - Python library and shell utilities to monitor filesystem events. Apache-2

GitHub (👨‍💻 180 · 🔀 740 · 📦 270K · 📋 710 - 30% open · ⏱️ 08.07.2026):

git clone https://github.com/gorakhargosh/watchdog

PyPi (📥 100M / month · 📦 2.7K · ⏱️ 01.11.2024):

pip install watchdog

Conda (📥 5.9M · ⏱️ 04.03.2026):

conda install -c conda-forge watchdog

filelock (🥈38 · ⭐ 960) - A platform-independent file lock for Python. MIT

GitHub (👨‍💻 66 · 🔀 140 · 📦 730K · ⏱️ 08.07.2026):

git clone https://github.com/tox-dev/py-filelock

PyPi (📥 640M / month · 📦 5.2K · ⏱️ 08.07.2026):

pip install filelock

Conda (📥 45M · ⏱️ 08.07.2026):

conda install -c conda-forge filelock

aiofiles (🥈34 · ⭐ 3.2K · 💤) - File support for asyncio. Apache-2

GitHub (👨‍💻 42 · 🔀 170 · 📦 250K · 📋 140 - 40% open · ⏱️ 09.10.2025):

git clone https://github.com/Tinche/aiofiles

PyPi (📥 150M / month · 📦 7.7K · ⏱️ 09.10.2025):

pip install aiofiles

Conda (📥 2.6M · ⏱️ 01.01.2026):

conda install -c conda-forge aiofiles

Show 6 hidden projects...

appdirs (🥉32 · ⭐ 1.1K · 💀) - A small Python module for determining appropriate platform-specific.. MIT
zipp (🥉32 · ⭐ 67) - Backport of pathlib-compatible object wrapper for zip files. ❗Unlicensed
pyfilesystem2 (🥉30 · ⭐ 2.1K · 💀) - Pythons Filesystem abstraction layer. MIT
path (🥉28 · ⭐ 1.1K) - Object-oriented file system path manipulation. ❗Unlicensed
scandir (🥉24 · ⭐ 540 · 💀) - Better directory iterator and faster os.walk(). Archived, as this.. BSD-3
Unipath (🥉23 · ⭐ 510 · 💀) - An object-oriented approach to Python file/directory operations. MIT

Compatiblity

typing (🥈34 · ⭐ 1.8K) - Python static typing home. Hosts the documentation and a user help.. Python-2.0

GitHub (👨‍💻 150 · 🔀 300 · 📋 920 - 23% open · ⏱️ 06.07.2026):

git clone https://github.com/python/typing

PyPi (📥 4.5M / month · 📦 3.3K · ⏱️ 01.05.2021):

pip install typing

Conda (📥 4.2M · ⏱️ 22.04.2025):

conda install -c conda-forge typing

six (🥈34 · ⭐ 1K) - Python 2 and 3 compatibility library. MIT

GitHub (👨‍💻 68 · 🔀 270 · 📋 300 - 36% open · ⏱️ 23.02.2026):

git clone https://github.com/benjaminp/six

PyPi (📥 1.1B / month · 📦 25K · ⏱️ 04.12.2024):

pip install six

Conda (📥 99M · ⏱️ 22.07.2025):

conda install -c conda-forge six

Show 5 hidden projects...

future (🥇37 · ⭐ 1.2K · 💀) - Easy, clean, reliable Python 2/3 compatibility. MIT
futures (🥉26 · ⭐ 240 · 💀) - Backport of the concurrent.futures package to Python 2.6 and 2.7. Python-2.0
contextlib2 (🥉26 · ⭐ 39 · 💤) - contextlib2 is a backport of the standard librarys contextlib.. ❗️psfrag
dataclasses (🥉25 · ⭐ 590 · 💀) - A backport of the dataclasses module for Python 3.6. Apache-2
pathlib2 (🥉24 · ⭐ 84 · 💀) - Backport of pathlib aiming to support the full stdlib Python API. MIT

Cryptography

bcrypt (🥈39 · ⭐ 1.5K) - Modern(-ish) password hashing for your software and your servers. Apache-2

GitHub (👨‍💻 40 · 🔀 200 · 📦 360K · 📋 160 - 3% open · ⏱️ 04.07.2026):

git clone https://github.com/pyca/bcrypt

PyPi (📥 190M / month · 📦 2K · ⏱️ 25.09.2025):

pip install bcrypt

Conda (📥 11M · ⏱️ 07.11.2025):

conda install -c conda-forge bcrypt

pycryptodomex (🥈36 · ⭐ 3.2K) - A self-contained cryptographic library for Python. BSD-3

GitHub (👨‍💻 160 · 🔀 560 · 📥 2.9K · 📦 140K · 📋 650 - 13% open · ⏱️ 29.03.2026):

git clone https://github.com/Legrandin/pycryptodome

PyPi (📥 70M / month · 📦 1.6K · ⏱️ 17.05.2025):

pip install pycryptodomex

Conda (📥 2.9M · ⏱️ 13.09.2025):

conda install -c conda-forge pycryptodomex

Show 5 hidden projects...

cryptography (🥇44 · ⭐ 7.7K) - cryptography is a package designed to expose.. ❗Unlicensed
asn1crypto (🥉33 · ⭐ 360 · 💀) - Python ASN.1 library with a focus on performance and a pythonic API. MIT
keyring (🥉32 · ⭐ 1.5K) - Store and access your passwords safely. ❗Unlicensed
tink (🥉31 · ⭐ 14K · 💀) - Tink is a multi-language, cross-platform, open source library that.. Apache-2
rsa (🥉28 · ⭐ 500 · 💀) - Python-RSA is a pure-Python RSA implementation. Apache-2

Infrastructure & DevOps

ansible (🥇48 · ⭐ 69K) - Ansible is a radically simple IT automation platform that makes your.. ❗️GPL-3.0

GitHub (👨‍💻 6.9K · 🔀 24K · 📦 42K · 📋 34K - 2% open · ⏱️ 08.07.2026):

git clone https://github.com/ansible/ansible

PyPi (📥 12M / month · 📦 600 · ⏱️ 18.06.2026):

pip install ansible

Conda (📥 1.9M · ⏱️ 19.06.2026):

conda install -c conda-forge ansible

botocore (🥇47 · ⭐ 1.6K) - The low-level, core functionality of boto3 and the AWS CLI. Apache-2

GitHub (👨‍💻 220 · 🔀 1.2K · 📦 440K · 📋 1.3K - 14% open · ⏱️ 08.07.2026):

git clone https://github.com/boto/botocore

PyPi (📥 1.3B / month · 📦 4.7K · ⏱️ 09.07.2026):

pip install botocore

Conda (📥

README truncated. View on GitHub

🔗 More in this category

Best-of Python

Contents

Explanation

Data Serialization

Data Containers & Dataframes

Data Structures

Data Validation

Algorithms & Design Patterns

Date & Time Utilities

File & Path Utilities

Compatiblity

Cryptography

Infrastructure & DevOps