Open Source Software for Self-Hosted
CapRover
CapRover is an free and easy-to-use application deployment and server manager for NodeJS, Python, PHP, ASP.NET, Ruby, MySQL, MongoDB, Postgres, WordPress and more. With CapRover you can create your own PaaS (Platform-as-a-Service) similar to that of Heroku, and deploying it to your own cloud instance.
Seafile
Seafile is an open source file sync & share solution designed for high reliability, performance and productivity. Sync, share and collaborate across devices and teams. Seafile can be self-hosted, or provided as a managed and hosted solution. With Seafile, you can rest assured that your files are safe as all files are encrypted before syncing with the server, even system administrators have the capability to view your personal files.
Adminer
Adminer provides administrators, developers and website maintainers with a full-featured database management tool written in PHP. With Adminer you can to a database servers with username and password. List fields, indexes, foreign keys and triggers of table. Change name, engine, collation, auto_increment and comment of table. Alter name, type, collation, comment and default values of columns. Create, alter and drop indexes, foreign keys, select form view and call stored procedures and functions. The software is distributed under the Apache License which makes it free and open-source. Adminer supports a wide variety of relational and NoSQL databases including MySQL, MariaDB, PostgreSQL, SQLite, MS SQL, Oracle, Firebird, SimpleDB, Elasticsearch and MongoDB.
MonetDB
MonetDB is an column-oriented database management system developed at the Centrum Wiskunde & Informatica. The database is released as free and open source software under the Mozilla Public License 2.0. By design, MonetDB can handle high performance on complex queries against large databases with hundreds of columns and millions of rows.
TaffyDB
TaffyDB is a free and open source, Pure-JavaScript database abstraction that stores data in JSON format. TaffyDB provides INSERT, DELETE, GET (SELECT) and JOIN methods to execure the data similar to that of traditional relational SQL databases. TaffyDB allows you to quickly setup an in-memory database that can be used in the same fashion as an SQLite database would, without configuration and a database server running.
Joy Framework
Joy is a maximalist web framework for lisp aficionados. The Joy Framework is written in the programming language Janet, and is used to build web apps faster with less code and memory usage. Joy does not use objects or classes, with Joy everything is a function that takes a request and outputs a response.
Meteor
With Meteor you can build web, mobile and desktop apps quickly. Meteor is a free and open-source JavaScript framework that is designed to provide developers with the necessities to build applications by writing less code. Over half a million developers around the globe has chosen Meteor as their go-to framework for building scalable JavaScript applications.
Apache HBase
With Apache HBase manager realtime read/write access to your Big Data. Apache HBase is an open-source, distributed, versioned, non-relational database modeled after Google's Bigtable: A Distributed Storage System for Structured Data. Just as Bigtable leverages the distributed data storage provided by the Google File System, Apache HBase provides Bigtable-like capabilities on top of Hadoop and HDFS.
Apache Cassandra
Apache Cassandra is a free and open-source, distributed, wide column store, NoSQL database management system. Apache Cassandra is designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure. The database has become the choice of many organizations that need scalability and high availability without compromising performance. Apache Cassandra also provides support for replicating across multiple datacenters, providing lower latency for end users of Cassandra-powered applications.