ssl — open-source software health

—

99Exceptionalhealth index

aws/s2n-tls

An implementation of the TLS/SSL protocols

C · Rust★ 4,750Aug 14, 2026

Apache-2.0Aug 14, 2026 · metrics 2.10.0

PyPI

98Exceptionalhealth index

urllib3/urllib3

urllib3 is a user-friendly HTTP client library for Python

Python★ 4,052↓ 1.9B/moAug 28, 2026

MITAug 28, 2026 · metrics 2.10.0

PyPI · npm

97Exceptionalhealth index

mitmproxy/mitmproxy

An interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers.

Python · TypeScript★ 44.6KAug 5, 2026

MITAug 5, 2026 · metrics 2.10.0

crates.io

97Exceptionalhealth index

rustls/rustls

A modern TLS library in Rust

Rust★ 7,587↓ 62.4M/moAug 28, 2026

Custom licenseAug 28, 2026 · metrics 2.10.0

PyPI

97Exceptionalhealth index

twisted/twisted

Event-driven networking engine written in Python.

Python★ 5,978↓ 14.7M/moAug 27, 2026

Custom licenseAug 27, 2026 · metrics 2.10.0

—

97Exceptionalhealth index

wolfSSL/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 and DTLS 1.3! Update to wolfSSL 5.9.1 for the latest CVE fixes.

C · Assembly★ 2,914Aug 22, 2026

GPL-3.0Aug 22, 2026 · metrics 2.10.0

npm

96Exceptionalhealth index

firebase/firebase-tools

The Firebase Command Line Tools

TypeScript★ 4,461↓ 11.2M/moAug 27, 2026

MITAug 27, 2026 · metrics 2.10.0

Maven

96Exceptionalhealth index

jetty/jetty.project

Eclipse Jetty® - Web Container & Clients - supports HTTP/3, HTTP/2, HTTP/1, websocket, servlets, and more

Java★ 4,091Aug 28, 2026

Custom licenseAug 28, 2026 · metrics 2.10.0

crates.io

95Exceptionalhealth index

actix/actix-net

A collection of lower-level libraries for composable network services.

Rust★ 775↓ 22.3M/moAug 27, 2026

Apache-2.0Aug 27, 2026 · metrics 2.10.0

94Exceptionalhealth index

labstack/echo

High performance, minimalist Go web framework

Go★ 32.6KAug 5, 2026

MITAug 5, 2026 · metrics 2.10.0

PyPI

93Exceptionalhealth index

cherrypy/cheroot

Cheroot is the high-performance, pure-Python HTTP server used by CherryPy. Docs -->

Python★ 202Jul 21, 2026

BSD-3-ClauseJul 21, 2026 · metrics 2.10.0

PyPI

93Exceptionalhealth index

ozeranskii/httptap

Rich-powered CLI that breaks each HTTP request into DNS, connect, TLS, wait, and transfer phases with waterfall timelines, compact summaries, or metrics-only output.

Python★ 511Jul 28, 2026

Apache-2.0Jul 28, 2026 · metrics 2.10.0

92Excellenthealth index

ghostunnel/ghostunnel

A simple TLS proxy with mutual authentication for securing non-TLS services.

Go · Python★ 2,186Jul 31, 2026

Apache-2.0Jul 31, 2026 · metrics 2.10.0

PyPI

91Excellenthealth index

pyca/pyopenssl

A Python wrapper around the OpenSSL library

Python★ 943Jul 17, 2026

Apache-2.0Jul 17, 2026 · metrics 2.10.0

crates.io

90Excellenthealth index

cloudflare/boring

BoringSSL bindings for the Rust programming language.

Rust★ 514↓ 884.2K/moAug 16, 2026

No licenseAug 16, 2026 · metrics 2.10.0

PyPI

90Excellenthealth index

jawah/urllib3.future

Inplace replacement for urllib3 capable of async with automatic HTTP/1, HTTP/2 and HTTP/3 transport.

Python★ 68↓ 2M/moAug 19, 2026

MITAug 19, 2026 · metrics 2.10.0

Go · npm

88Excellenthealth index

certimate-go/certimate

An open-source and free self-hosted SSL certificates ACME tool, automates the full-cycle of issuance, deployment, renewal, and monitoring visually. 完全开源免费的自托管 SSL 证书 ACME 工具，申请、部署、续期、监控全流程自动化可视化，支持各大主流云厂商。

Go · TypeScript★ 9,077Aug 28, 2026

MITAug 28, 2026 · metrics 2.10.0

crates.io

87Excellenthealth index

rust-openssl/rust-openssl

OpenSSL bindings for Rust

Rust★ 1,636↓ 66.9M/moAug 8, 2026

No licenseAug 8, 2026 · metrics 2.10.0

—

86Excellenthealth index

testssl/testssl.sh

Testing TLS/SSL encryption anywhere on any port

Shell★ 9,181Aug 28, 2026

GPL-2.0Aug 28, 2026 · metrics 2.10.0

Packagist · npm

84Excellenthealth index

centralnicgroup-opensource/rtldev-middleware-php-sdk

API connector library for the Team Internet backend APIs (CentralNic Reseller, Internet.bs, Moniker)

PHP★ 5↓ 2,197/moSep 6, 2026

MITSep 6, 2026 · metrics 2.10.0

crates.io

84Excellenthealth index

emanuele-em/proxelar

Scriptable local traffic workbench for inspecting, intercepting, replaying, and rewriting HTTP/HTTPS and WebSocket traffic.

Rust★ 1,011↓ 277/moJul 27, 2026

MITJul 27, 2026 · metrics 2.10.0

PyPI

81Excellenthealth index

jawah/wassima

No more certifi! System trust store at hand. In Pure Python.

Python★ 24↓ 2M/moAug 22, 2026

MITAug 22, 2026 · metrics 2.10.0

Packagist

80Excellenthealth index

amphp/socket

Non-blocking socket and TLS functionality for PHP based on Amp.

PHP★ 269↓ 3.2M/moAug 27, 2026

MITAug 27, 2026 · metrics 2.10.0

Packagist

80Excellenthealth index

composer/ca-bundle

Lets you find a path to the system CA bundle, and includes a fallback to the Mozilla CA bundle.

PHP★ 2,961↓ 7.6M/moAug 27, 2026

MITAug 27, 2026 · metrics 2.10.0

Maven

78Goodhealth index

Hakky54/ayza

🔐 An SSL library for configuring http client or server. Rich with features such as hot reloading ssl and trusting additional certificates during runtime, combining multiple keystores, loading pem files and os/jdk certificates, logging certificate information during ssl handshake, bypassing ssl configuration from other libraries and more

Java★ 579Sep 1, 2026

Apache-2.0Sep 1, 2026 · metrics 2.10.0

crates.io

78Goodhealth index