Not every useful GitHub find is about agents and LLMs directly. Some tools cover the neighboring jobs: preparing data for AI models, upscaling images, finding a ready solution fast instead of building one from scratch. Here are five of them, picked for a vibe coder's tasks.
What these five have in common
The shared criterion: the tool genuinely fits into a workflow where AI is used to create or process content and code, rather than being a generic utility with no connection to the task. Some entries are tools in their own right (Crawl4AI, Upscayl), others are directories that save you search time (public-apis, free-programming-books, Awesome-Design-Tools).
Crawl4AI — a website turned into clean Markdown for LLMs
Crawl4AI turns any page of a site into Markdown that is ready for RAG pipelines and prompts with context — instead of raw HTML full of navigation, ads and layout.
It supports JavaScript rendering, sessions and proxies, adapting to the structure of a specific site. Useful when you need to feed a model the contents of a client's or a competitor's site rather than retelling it by hand.
Repository: github.com/unclecode/crawl4ai
Upscayl — AI image upscaling locally
Upscayl enlarges blurry and pixelated images using the Real-ESRGAN model — no cloud subscription and no uploading photos to someone else's server, since processing runs on your own GPU.
Handy when you need to rescue a content card cover, an old screenshot or a low-resolution logo without losing quality — faster than hunting for a replacement image from scratch.
Repository: github.com/upscayl/upscayl
public-apis — a catalog of thousands of free APIs
A huge list of public APIs for every occasion: weather, exchange rates, translations, maps and thousands of other specialized data sources.
Before writing your own parser or integration from scratch, it is worth checking the catalog — the data source for a pet project or an MVP often already exists, ready-made and free.
Repository: github.com/public-apis/public-apis
free-programming-books — free learning in 40+ languages
A collection of free books, courses and podcasts on programming in more than 40 languages, Russian included, covering everything from specific programming languages to algorithms and system design.
The collection has an updated chapter on using AI tools in learning — useful if you need to get your bearings quickly on which materials on the topic are actually worth the time.
Repository: github.com/EbookFoundation/free-programming-books
Awesome-Design-Tools — a catalog of visual tools
A list of the best tools for designers: fonts, gradients, ready-made design systems, prototyping tools — each tagged as "paid", "free", "open source" or "macOS only".
Useful if you build the product's visuals yourself without a dedicated designer on the team — finding the right tool in the catalog is faster than googling "best gradient generator" all over again.
Repository: github.com/goabstract/Awesome-Design-Tools
How to fit them into your workflow
Crawl4AI and Upscayl install like any Python or desktop tool — the setup instructions are in each repository's README. The three directories (public-apis, free-programming-books, Awesome-Design-Tools) need no installation — they are link lists worth keeping in your bookmarks and checking before you write a solution from scratch.
How we do it
We build roundups like this out of our own practice: we test a tool on a real task instead of retelling the marketing copy from the project's site. The qvib engine for generating code and sites runs on a similar principle — take proven components and wrap them in a convenient workflow rather than reinventing everything.
Related links
- GitHub tool roundups: qvib.pro/arsenal/github-podborki/
- Developer tools: qvib.pro/arsenal/instrumenty-dlya-razrabotchika/