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Runjs Alternatives
Similar projects and alternatives to runjs
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up-for-grabs.net
This is a list of projects which have curated tasks specifically for new contributors. These issues are a great way to get started with a project, or to help share the load of working on open source projects. Jump in!
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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gcodepreview
OpenPythonSCAD library for moving a tool in lines and arcs so as to model how a part would be cut using G-Code or described as a DXF.
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sirix
SirixDB is an an embeddable, bitemporal, append-only database system and event store, storing immutable lightweight snapshots. It keeps the full history of each resource. Every commit stores a space-efficient snapshot through structural sharing. It is log-structured and never overwrites data. SirixDB uses a novel page-level versioning approach.
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brackit
Query processor with proven optimizations, ready to use for your JSON store to query semi-structured data with JSONiq. Can also be used as an ad-hoc in-memory query processor.
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substrata
Metaverse client and server written in C++. Runs on Windows, Mac, Linux and Web. Custom 3D engine, networked physics and Lua scripting
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
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claude-code-flow
Discontinued Claude-Flow v2.0.0 Alpha represents a revolutionary leap in AI-powered development orchestration. Built from the ground up with enterprise-grade architecture, advanced swarm intelligence, and seamless Claude Code integration. [Moved to: https://github.com/ruvnet/claude-flow]
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runjs discussion
runjs reviews and mentions
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Ask HN: What Are You Working On? (June 2025)
https://github.com/CharlieDigital/runjs
I wrote an MCP server in C#/.NET that let's LLMs safely generate an run JavaScript using the Jint interpreter.
It includes a `fetch` analogue using `System.Net.HttpClient`, as well as `jsonpath-plus`, and a built-in secrets manager.
The prime use case is working with HTTP REST APIs with an LLM. With this, you can let users safely generate and execute JavaScript in a sandbox.
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Remote MCP Support in Claude Code
I've been working on an MCP server[0] that let's LLMs safely and securely generate and execute JavaScript in a sandbox including using `fetch` to make API calls. It includes a built in secrets manager to prevent exposing secrets to the LLM.
I think this unlocks a lot of use cases that require code execution without compromising security. Biggest one is that you can now ask the LLM to make API calls securely because the JS is run in a C# interpreter with constraints for memory, time, and statement limits with hidden secrets (e.g. API keys).
The implementation is open source with sample client code in JS using Vercel AI SDK with a demo UI as well.
[0] https://github.com/CharlieDigital/runjs
- Show HN: RunJS – a C# MCP server to let LLMs generate and run JavaScript safely
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A note from our sponsor - SaaSHub
www.saashub.com | 14 Jul 2025
Stats
CharlieDigital/runjs is an open source project licensed under MIT License which is an OSI approved license.
The primary programming language of runjs is C#.