urllib3 VS pycurl

Compare urllib3 vs pycurl and see what are their differences.


Python HTTP library with thread-safe connection pooling, file post support, user friendly, and more. (by urllib3)


PycURL - Python interface to libcurl (by pycurl)
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urllib3 pycurl
7 3
2,984 857
1.4% 0.8%
8.8 8.3
6 days ago 11 days ago
Python Python
MIT License GNU General Public License v3.0 or later
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of urllib3. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-04-21.


Posts with mentions or reviews of pycurl. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-03-07.
  • SSL backend error when using OpenSSL
    1 project | reddit.com/r/codehunter | 12 Apr 2022
    ImportError: pycurl: libcurl link-time ssl backend (openssl) is different from compile-time ssl backend (none/other) I read some documentation saying that "To fix this, you need to tell setup.py what SSL backend is used" (source) although I am not sure how to do this since I installed pycurl using pip.
  • HTTP Calls in Python Without requests or Other External Dependencies
    6 projects | dev.to | 7 Mar 2021
    pycurl is less popular as a Python library, but interfaces with the well-known libcurl.
  • Using NGINX to put Geoserver HTTPS
    1 project | dev.to | 4 Mar 2021
    I tried the geoserver-rest library which has a pycurl dependency for testing the geoserver REST operation. I found that it was not working with the https geoserver URL but working fine with the python request library. So, only for the REST operation, I used the geoserver URL without proxy as http:localhost:8080/geoserver. If you found, why it is not working on pycurl please let me know 😜.

What are some alternatives?

When comparing urllib3 and pycurl you can also consider the following projects:

requests - A simple, yet elegant, HTTP library.

httplib2 - Small, fast HTTP client library for Python. Features persistent connections, cache, and Google App Engine support. Originally written by Joe Gregorio, now supported by community.

grequests - Requests + Gevent = <3

Uplink - A Declarative HTTP Client for Python

requests-futures - Asynchronous Python HTTP Requests for Humans using Futures

Bearer Python

Doublify API Toolkit

kiss-headers - 💡Python package for HTTP/1.1 style headers. Parse headers to objects. Most advanced available structure for http headers.

txrequests - Asynchronous Python HTTP Requests for Humans using twisted

jasmin - Jasmin - Open source SMS gateway

treq - Python requests like API built on top of Twisted's HTTP client.

Tapioca-Wrapper - Python API client generator