skills is gaining serious momentum, plus 3 more tools worth watching
The Number: 66% of the tools we track are completely free — no paid tier, no catch.
Claude Code skills based on The Minimalist Entrepreneur by Sahil Lavingia
The Lens
This turns Sahil Lavingia's Minimalist Entrepreneur methodology into Claude Code skills. Ten of them install through the plugin marketplace: find a community, validate an idea, scope an MVP, processize, find first customers, set pricing, plan marketing, grow sustainably, define company values, and run a minimalist review. Instead of reading the book and trying to apply it, you invoke a skill and the agent, prompted to act as an advisor channeling the book's philosophy, walks your specific situation through the framework. It asks questions, works through your answers and hands back structured output. The skills are free; you need Claude Code to run them. The catch is that this is one founder's business framework, not a technical tool. Output is only as good as your inputs, and if you disagree with the minimalist approach you will disagree with the advice. The repo has not been updated since April and ships no LICENSE file, only an MIT declaration in its plugin manifest, so be careful about reusing the prompts.
LLM inference in C/C++
The Lens
llama.cpp is the engine that runs large language models on ordinary hardware: a laptop CPU, an Apple Silicon Mac, a gaming GPU, even a phone. It loads GGUF model files, the format most local-AI tools now share, and sits underneath a lot of the apps people use to run models locally. MIT licensed, and the founding ggml team joined Hugging Face in February 2026.
You can still build from source, but you don't have to: versioned releases started in August 2026, there's an installer at llama.app, a llama serve command, and a free desktop app for Mac and Windows. The built-in server speaks the OpenAI API and now Anthropic's Messages API too. Hardware support is wide, from CUDA, ROCm and Metal to Vulkan, SYCL and WebGPU.
Free at every size. Solo devs who want a local model with no middleman get the most control here; Ollama (ollama/ollama) is the friendlier wrapper. Teams serving many users at once should look at vLLM (vllm-project/vllm), which is built for throughput.
The catch: model size meets hardware fast. A 70B model at the common 4-bit quantization is a roughly 43 GB file, so it won't fit on a single 24 GB GPU and has to split between GPU and system RAM, which is slow. Expect to spend real time picking quantizations and tuning flags.
Curated list of the best truly open-source AI projects, models, tools, and infrastructure.
The Lens
This is the 'awesome list' for AI. Models, tools, infrastructure, datasets, organized by category with brief descriptions and links to the actual projects. Awesome lists live or die by curation quality. This one focuses on 'truly open source,' not source-available, not 'open weights with a restrictive license.' That distinction matters when you're building on top of these tools. The list is maintained on GitHub and follows the awesome-re standards. The catch: awesome lists are snapshots. They go stale unless someone actively maintains them, and the growth spike suggests this was recently featured somewhere. The real question is whether it'll be maintained in 6 months. Also, 'curated' means one person's opinion of what's worth including; your needs might differ. Use it as a starting point, not a definitive source.
Data visualization and exploration platform
The Lens
Superset is a full business intelligence platform you can self-host for free, with interactive dashboards, charts, and reports without writing code. Think Tableau or Looker, but open source. Connect it to Postgres, MySQL, ClickHouse, BigQuery, or dozens of other databases, then build interactive dashboards with drag-and-drop. Fully free under Apache 2.0. No feature gating, no user limits, no enterprise unlock. You get the complete BI platform: SQL editor, chart builder, dashboard designer, role-based access, and scheduling. At, this is one of the most popular open source projects period. The catch: Superset is resource-hungry and complex to operate. The Docker Compose setup works for testing, but production deployment requires Redis, a metadata database, Celery workers for async queries, and careful memory tuning. Expect 4-8GB RAM minimum. And the learning curve is real. Building useful dashboards takes time, and the UI can feel overwhelming. If you just need a few charts, Metabase is much simpler to get running.
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