Free Development & DevOps Software
DNSInspect
DNSInspect is a free online service where you can check your domain's servers for common DNS and mail errors and produces a reports that includes explanations on how to fix them.
VRaptor
VRaptor is a free and open-source MVC framework written in Java. VRaptor is used to develop web applications on top of CDI (Contexts and Dependency Injection for Java EE). The framework features tools that allow developers to maintain a high productivity and a developer experience loved by many. The VRaptor community consist of seasoned developers that freely build and distribute the framework free of charge.
Cyberduck
Cyberduck is a free and open-source client for FTP and SFTP, WebDAV, Amazon S3, OpenStack Swift, Backblaze B2, Microsoft Azure & OneDrive, Google Drive and Dropbox. Cyberduck is written in Java and C# using the Cocoa framework and is available for macOS and Windows.
Jenkins
Jenkins is a free and open source DevOps tool used for ticket systems and CI/CD infrastructure. Jenkins provides hundreds of plugins to support building, deploying and automating any software project. The tool is a self-contained Java-based program that is ready to run out-of-the-box, with packages for Windows, Mac OS X and Unix-like operating systems. Anyone is free to contribute to Jenkins, and the software is released under the MIT license.
Babel
Babel is the next generation free and open-source JavaScript compiler and toolchain. The Babel toolchain is mainly used to convert ECMAScript 2015+ code into a backwards compatible version of JavaScript to be compatible with older browser versions. Babel can transform syntax, polyfill features that are missing for your targeted environments, perform source code transformations and more.
PuTTY
PuTTY is a free and open-source lightweight and simple terminal application for Windows. PuTTY supports SSH client, telnet, SFTP, and rlogn and is useful for administrations that need to establish an SSH connection to remote systems such as network switches, routers, unix systems and vmware. PuTTY is provided as a 32 bit and 64 bit client with supports SSH2 and SSH1 protocols.
Spider Gazelle
Spider Gazelle is a Rails esque web framework written in the programming language Crystal. The framework focuses on speed, extensabillity and ease-of-use.