Linux Softwares to Data API

VFront is a powerful and open-source web-based front-end for managing various relational databases including MySQL, PostgreSQL, SQLite, and MariaDB. It provides a user-friendly interface for performing database operations without needing command-line access.

LimeSurvey is a powerful, free, and open-source online survey application written in PHP. It supports various database backends and is distributed under the APL license. Offering extensive features for creating, distributing, and analyzing surveys, it's a flexible alternative to commercial survey tools.

Mattermost is an open-source, self-hosted platform for secure team collaboration, offering a Slack-alternative with emphasis on data control, privacy, and customizability. It provides a range of communication and project management tools for distributed and technical teams.