Open Source Software
Grafana
As the world's most popular free and open source technology for visualizing metrics, Graphana makes it easy to create a interactive dashboard for data monitoring. Grafana's designed from the ground-up for analyzing and visualizing metrics such as system CPU, memory, disk and I/O utilization. All metrics provided by connected data sources and applications can be visualized and monitored though charts, graphs, and alerts. You can also extend the core functionality of Graphana through a built-in plug-in system. Popular companies and applications like Uber, Robinhood, Nubank and others trust Graphana and its real-time visualization and monitoring capabilities.
Flyway
Flyway provides open source, enterpise-grade version control for your database. By allowing your application to have a robust schema evulotion across all your environments, you can restasured that your applications are built safer and faster. With Flyway you can manage your database with plain old SQL and perform migrations for advanced data transformations and handling with LOBs and drop all tables, views, triggers, and more from a schema without dropping the schema itself. Flyway also integraties with cloud database provides and third-party hosting platforms such as Amazon RDS, Microsoft SQL Azure, Google Cloud SQL, Heroku, and more.
MainWP
The MainWP WordPress plugin is a free and open-source, self-hosted solution for managing multiple WordPress sites from a single dashboard. With MainWP you can manage posts and pages, controlling users, making backups and performing updates through the unified MainWP dashboard. All of which will minimize the time and cost of maintaining multiple WordPress sites.
Gitly
Gitly is a free and open-source git-based source code management tool written in V. The software can be self-hosted affordably with a $3.5 cloud instance. Gitly is light, fast and utlize minimal ammount of RAM, and can be deployed as a single <1 MB binary, including compiled templates.
BlueGriffon
A next-generation Web and EPUB Editor based on the rendering engine of Firefox. The BlueGriffon is a WYSIWYG content editor for the World Wide Web. With BlueGriffon you can edit HTML documents in a what-you-see-is-what-you-get fashion.
Clementine
Clementine is free and open-source music player and library organizer based on Amarok 1.4. The application work cross-platform and is avalible for BSD, macOS, Linux, and Windows.
RSSOwl
RSSOwl is a powerful RSS application that can help you organize, search and read all your news feeds in a comfortable way. RSS Owl is released as open-source software and can be downloaded and used for free, without limitations. With RSS Owl it's easy to stay on-top of the latest news and information that you like. All feeds can be categorized with labels and articles can be saved individually, and when new content in your feed is released RSS Owl automatically notify you through its notification system. RSS Owl is developed as a cross-platform software and runs on all major platforms including macOS, Linux, and Windows.
kodeWeave
kodeWeave is a free and open source, realtime coding playground for Markdown, HTML, CSS and Javascript. It shares many similarities with platforms like JSFiddle and JSBin, while being designed to work specifically offline across multiple devices, including mobile. If you every used JSFiddle, JSbin, Dabblet, Liveweave, CodePen, CSSdeck, CSSdesk, Tinkerbin, d3 playground, Plunker or Pastebin kodeWeave will feel familiar.