31 New Open Source Tools (AI, Dev & Infra)

Themes that show up again and again in this batch: AI systems with real memory, large models on modest hardware, browser-native agents, physics-aware models, and APIs that turn messy web scraping into one call. Below is a practical rundown of 31 projects worth a look.

AI, agents & models

NVIDIA Cosmos

Building blocks for physical AI—simulation-trained world models, robotics/video datasets, and tooling to fine-tune or evaluate them. Aimed at robotics, AV, and embodied systems that need physics, not just pixels.

odysseus

Self-hosted AI workspace for chat, tools, and agents on infrastructure you control. Convenience tradeoff for ownership of data and config.

MemPalace

Persistent memory for AI apps—cross-session recall with an emphasis on benchmarks. Drop-in memory layer instead of inventing your own retrieval stack.

whichllm

Recommends which local model will actually run well on your hardware using recency-aware, real-world benchmarks—before you download huge weights that won’t fit.

jcode

Harness for building coding agents: how they read a repo, act, and report. Scaffolding for agent designers more than a finished product.

AirLLM

Run large open models (toward 70B-class) on consumer GPUs via aggressive memory management—trade speed for accessibility on ~4GB-class setups.

ds4

Local inference engine for DeepSeek 4 (Flash/Pro) across Metal, CUDA, and ROCm—from antirez (Redis). Cross-vendor GPU path for those models.

Valmis

AI agent stack with security as a first-class concern for teams worried about tool access and prompt injection.

peerd

Browser-native agent harness (Chrome/Firefox extension)—the agent loop runs in the browser against the page you’re looking at.

agent-native

Framework for apps designed around agents from day one (Builder.io)—patterns beyond bolting a chatbot onto a classic app.

flue

Sandbox agent framework from the Astro team—contain agent actions so mistakes have a limited blast radius.

Nubase

AI-native backend platform aimed at turning agent-written code into real apps; self-hostable alternative to closed app builders.

ktx

Executable context layer for data/analytics agents so tools like coding CLIs work with structured, actionable context—not static dumps.

Strix

AI-assisted penetration testing: find and help fix app vulnerabilities. Inspectable alternative to closed scanners.

Infra, data & networking

iroh

Peer-to-peer networking: dial by key with QUIC and NAT traversal so apps aren’t stuck fighting changing IPs and blocked ports.

pyinfra

Agentless infrastructure automation over SSH in plain Python—fleet changes without YAML-heavy CM or agents everywhere.

Turso

In-process SQL database compatible with SQLite-style workflows—low latency for edge and embedded deployments.

Firecrawl

Scraping, search, and page interaction as an API for LLM pipelines and monitoring—less DIY crawler infrastructure.

CuPy

NumPy/SciPy-compatible GPU arrays for Python—accelerate numerical code with minimal rewrites.

HelixDB

Graph + vector in one OLTP database (Rust, object storage)—relationships and similarity search without two separate stores.

textbee

Turn an Android phone into an SMS gateway for low-volume or budget SMS without a commercial API.

Design, UI & frontend

Skybridge

Full-stack TypeScript framework for MCP Apps and ChatGPT Apps—type-safe, React-friendly scaffolding.

cate

Infinite zoomable canvas IDE: editor, terminal, and browser as spatial panels instead of rigid tabs.

LikeC4

Architecture diagrams generated from code (C4-oriented)—docs that stay closer to the real system.

openpencil

Open-source AI-native vector design tool, including concurrent agent teams on the canvas.

component-party.dev

Side-by-side comparison of web component frameworks—same concepts across syntaxes for evaluation and mental-model translation.

Orval

Type-safe TypeScript clients from OpenAPI for React Query, Angular, Vue Query, SWR, and more.

brownies

Small unified API for cookies, local/session storage, and related storage with subscribe events.

nub

Consolidated fast Node.js toolchain to cut the sprawl of many small build/lint utilities.

mitos

ASCII art for brand assets—CLI banners, README headers, developer-facing identity (Oxide Computer).

Loupe

Privacy-focused iOS app that makes app observation/access more concrete for users (research-driven).

extend-hq/ui

Early UI project listing with sparse public description—worth checking the repo directly if you track Extend’s stack.

Patterns worth noticing

Bookmark a few that match a gap you already have—memory, local inference, scraping, or agent harnesses—before the next trending list scrolls past.