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About

​RxDB is a local-first, NoSQL JavaScript database optimized for modern web and mobile applications. It enables offline-first functionality by storing data directly on the client using storage engines like IndexedDB, OPFS, SQLite, and more. RxDB offers real-time reactivity, allowing developers to subscribe to changes in documents, fields, or queries, ensuring that UI components update automatically as data changes. Its flexible replication engine supports syncing with various backends and custom endpoints. RxDB integrates seamlessly with frameworks and environments. Additional features include field-level encryption, schema validation, conflict resolution, backup and restore, attachments, and CRDT support. By reducing server load and providing low-latency local queries, RxDB enhances performance and scalability, making it ideal for applications that require real-time updates, offline access, and cross-platform consistency.

About

Velt is a full-stack collaboration SDK that enables developers to embed rich, real-time, and asynchronous collaboration features into web applications with minimal effort. With Velt, you can add contextual comments (à la Figma or Google Docs), live presence indicators, shared editing, “follow me” view modes, and Slack/Meet-style huddles (audio, video, screen sharing). Velt also offers built-in Loom-style recording (screen, camera, or audio), complete with AI-powered transcription and auto-summaries, so users can leave video or voice feedback and later search or scrub to relevant bits. Additional collaboration tools include in-app notifications, mentions, reactions, arrows/highlights for annotation, analytics dashboards for tracking engagement, and flexible UI components you can style to match your app’s branding. It handles all the complexity, real-time syncing, conflict resolution (via CRDTs), offline handling, scaling, and optional self-hosting.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers requiring a solution to optimize their data synchronization processes and enhance user experiences

Audience

Developers, product teams, and SaaS builders wanting a tool to add powerful, production-ready collaboration to their applications without building complex infrastructure from scratch

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

RxDB
Founded: 2018
Germany
rxdb.info/

Company Information

Velt
Founded: 2020
United States
velt.dev/

Alternatives

Core Data

Core Data

Apple

Alternatives

Loom

Loom

Atlassian
IndexedDB

IndexedDB

Mozilla

Categories

Categories

Integrations

Angular Supported
React Supported
Vue.js Supported
ClassWallet Not Supported
Colossyan Not Supported
Datarails Not Supported
Discord Not Supported
FLYR Not Supported
Flutter Supported
Google Cloud Platform Not Supported
Liveblocks Not Supported
Microsoft Teams Not Supported
Node.js Supported
Qloo Not Supported
React Native Supported
Resend Not Supported
Segment Not Supported
Varonis Data Security Platform Not Supported
Zapier Not Supported
trumpet Not Supported

Integrations

Angular Supported
React Supported
Vue.js Supported
ClassWallet Supported
Colossyan Supported
Datarails Supported
Discord Supported
FLYR Supported
Flutter Not Supported
Google Cloud Platform Supported
Liveblocks Supported
Microsoft Teams Supported
Node.js Not Supported
Qloo Supported
React Native Not Supported
Resend Supported
Segment Supported
Varonis Data Security Platform Supported
Zapier Supported
trumpet Supported
Claim RxDB and update features and information
Claim RxDB and update features and information
Claim Velt and update features and information
Claim Velt and update features and information