collabx.live

What It Is

CollabX is a desktop-first, real-time collaborative online IDE designed to let students, developers, and interviewers “Code Together” in the same workspace. It does not support phones or tablets and requires a laptop or desktop with a larger screen. No installation is needed: after logging in, users can create a workspace and invite others to join with an 8-digit access code.

Core Capabilities

In terms of features, CollabX brings multi-user code editing, real-time cursor tracking, code synchronization, instant execution, voice communication, a collaborative whiteboard, and role-based permissions into a single interface. Its synchronization is built on Spring WebSockets, with copy claiming sub-100ms cursor and code sync. Code execution is handled via the Judge0 API, running languages such as Python, Java, C++, JS, and SQL in isolated containers. Voice is based on WebRTC and Agora; the editor uses Monaco Editor, and the whiteboard uses excalidraw. For roles, it supports Host, Editor, and Viewer, with controls for execution permissions and muting participants. Safe refresh recovery relies on database persistence, allowing users to return to the previous state after disconnecting or refreshing the page.

Pricing and Limitations

CollabX uses a freemium pricing model. The free tier requires no credit card and includes workspace creation, real-time collaboration, code execution, the whiteboard, and voice chat. Pro costs ₹99/month and mainly expands multi-hour sessions, participant limits, additional languages, or visual effects. One important caveat is its very strict refund policy: as a rule, all payments and subscriptions are non-refundable, and downtime does not qualify for cash compensation.

Pros and Cons

The main advantage is its complete collaboration workflow. It is well suited to handling interviews, teaching, pair programming, and algorithm walkthroughs on a single page, reducing the need to switch between an IDE, meeting software, and whiteboard tools. The drawbacks are that mobile is not supported at all, and publicly available information does not mention self-hosting, open source availability, enterprise compliance, SLA, or external API/SDK support. It also depends on third-party services such as Judge0, Agora, and Razorpay, so real-world stability should be verified through testing.

Who It’s For and Access from China

CollabX is suitable for teachers guiding students through live practice, technical interviewers observing candidates as they code, student group assignments, and lightweight remote pair programming. The collected text does not state how well it works from mainland China. Since voice and code execution depend on overseas third-party services, network and payment experiences may be uncertain; Razorpay may also be less convenient than domestic Chinese payment options. Comparable alternatives include Replit Multiplayer, CodeSandbox Live, GitHub Codespaces, VS Code Live Share, and JetBrains Code With Me.