A collective list of free APIs

The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data.

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

Certbot is EFF's tool to obtain certs from Let's Encrypt and (optionally) auto-enable HTTPS on your server. It can also act as a client for any other CA that uses the ACME protocol.

The Inter font family

q - Run SQL directly on delimited files and multi-file sqlite databases

The easy-to-use and developer-friendly enterprise CMS powered by Django

A free & open modern, fast email client with user-friendly encryption and privacy features

Create *beautiful* command-line interfaces with Python

An integrated shell for working with the AWS CLI.

Typefaces for source code beautification

A supercharged AWS command line interface (CLI).

Python Koans - Learn Python through TDD

CMS framework for Django

Official s3cmd repo -- Command line tool for managing S3 compatible storage services (including Amazon S3 and CloudFront).

Fast database snapshot and restore tool for development

The successor to this repository is actively maintained at https://formspree.io. Its source code is not available

Glue is a simple command line tool to generate CSS sprites

A minimal set of icons in raster, vector and font formats — free for public use.

png screenshots of webpages

Generate secure multiword passwords/passphrases, inspired by XKCD

Highlight lines changed since the last commit (supports Git, SVN, Bazaar, Mercurial and TFS) / ST2(3) plugin

REDbot is lint for HTTP resources.

Mac GUI for pngquant, pngnq and posterizer

Perform a lookup by CSS selector on an HTML input

Deploy N AWS micro instances and launch coordinated siege against webservers.

Allows you to use DNSMadeEasy with letsencrypt.sh and DNS challenge response