Open-source C projects categorized as SSL | Edit details

An SSL is security technology. It's a protocol for servers and web browsers that makes sure that data passed between the two are private. It was first developed by Netscape in 1995 for the purpose of ensuring privacy, authentication, and data integrity in Internet communications. SSL is the predecessor to the modern TLS encryption used today.

Top 9 C SSL Projects

  • GitHub repo OpenSSL

    TLS/SSL and crypto library

    Project mention: Secure your API Gateway APIs mutual TLS | dev.to | 2022-01-17

    First of all we are going to create the client certificate and the private certificate authority (CA) that we need. I will be using OpenSSL on Mac to create this.

  • GitHub repo Mongoose

    Embedded Web Server (by cesanta)

    Project mention: esp32 websockets sessions | reddit.com/r/esp32 | 2022-01-03

    Another option is to use Mongoose. I've got some personal gripes with it but that aside it's a great library. I've implemented a few different WebSocket interfaces with it.

  • SonarQube

    Static code analysis for 29 languages.. Your projects are multi-language. So is SonarQube analysis. Find Bugs, Vulnerabilities, Security Hotspots, and Code Smells so you can release quality code every time. Get started analyzing your projects today for free.

  • GitHub repo s2n

    s2n : an implementation of the TLS/SSL protocols

  • GitHub repo mbedTLS

    An open source, portable, easy to use, readable and flexible SSL library

    Project mention: Elliptic Curve Cryptography Explained | news.ycombinator.com | 2021-05-28

    If you want to see a real implemention of arbitrary sized integer math, mbedTLS is a great example:


    All of the ECC code in that library relies on this code, which can be accelerated by dedicated hardware.

  • GitHub repo GmSSL


    Project mention: GmSSL | news.ycombinator.com | 2021-08-12
  • GitHub repo sslsplit

    Transparent SSL/TLS interception

    Project mention: droe/sslsplit - Transparent SSL/TLS interception | reddit.com/r/GithubSecurityTools | 2021-02-12
  • GitHub repo wolfssl

    The wolfSSL library is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3!

    Project mention: FOSS News International #2: November 8-145, 2021 | reddit.com/r/fossnews | 2021-11-15

    wolfSSL 5.0.0

  • OPS

    OPS - Build and Run Open Source Unikernels. Quickly and easily build and deploy open source unikernels in tens of seconds. Deploy in any language to any cloud.

  • GitHub repo merecat

    Small and made-easy HTTP/HTTPS server based on Jef Poskanzer's thttpd

    Project mention: merecat: Small and made-easy HTTP/HTTPS server based on Jef Poskanzer's thttpd | reddit.com/r/opensource | 2021-10-04
  • GitHub repo openssl_examples

    examples of using OpenSSL

    Project mention: secure client-server communication | reddit.com/r/C_Programming | 2021-03-05
NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2022-01-17.

C SSL related posts


What are some of the best open-source SSL projects in C? This list will help you:

Project Stars
1 OpenSSL 17,363
2 Mongoose 7,855
3 s2n 4,038
4 mbedTLS 3,315
5 GmSSL 2,802
6 sslsplit 1,441
7 wolfssl 1,408
8 merecat 89
9 openssl_examples 74
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