Apps similar to Realm include SQLite, which is free and open source. Other options are Supabase, PocketBase, Firebase and bknd.io. You can choose from more than 10 Backend as a Service like Realm for self-hosting, the web, Windows, Linux and Mac.
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain.
The open source Firebase alternative. Supabase adds realtime and restful APIs to Postgres without a single line of code.
United States
Bulgaria
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Firebase, provided by Google, is a backend service and application development platform. It uses AI, cloud infrastructure, and cross-platform SDKs for efficient app development. Firebase offers tools and infrastructure for app creation and business growth.
United States
Modular visual backend offering integrated database, authentication, media, and workflow management, supports SQLite, Postgres, cloud DBs, AWS S3, flexible deployment across major runtimes, open source, built for universal compatibility and direct control.
Switzerland
Meteor is a set of new technologies for building top-quality web apps in a fraction of the time. It is built around Smart Packages: little bundles of code that can run on a client, inside a cloud service, or both, and that can manage their lifetime inside the modern distributed...
SignalDB is a client-side database with a MongoDB-like interface and TypeScript support. It allows easy data management, reactivity and persistence on the client side, with plans for future replication capabilities.
GermanyEU
RxDB (short for Reactive Database) is a NoSQL-database for JavaScript Applications like Websites, hybrid Apps, Electron-Apps and NodeJs. Reactive means that you can not only query the current state, but subscribe to all state-changes like the result of a query or even a single...
Instant is for building real-time and offline-enabled applications. We make it easy to build collaborative products like Notion or Figma.
An embedded database built on object storage. Unlike traditional LSM-tree storage engines, SlateDB writes data to object storage to provide bottomless storage capacity, high durability, and easy replication.
ObjectBox DB is an easy & fast object-oriented mobile database for Android, Linux, soon iOS. It supports relations, JavaRx, Kotlin. It is 10X faster than SQLite. And POJOs are POJOs.
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