GitHub Trending on August 16: public-apis leads, plus three free developer picks (2026)

One repository moved like a resource list rather than a new framework: public-apis added 2,260 stars in GitHub's daily window, ahead of diagram-design at 1,607. The rest of the board splits into spec-driven coding, tiny local inference, agent browsers, and internal-app tooling. 1

The free section has three different shapes: Freebuff says its coding tools cost $0 and need no API key; Attyn starts each new account with 500 launch credits; and OpenRouter has a free North Mini Code model, subject to the platform's free-tier limits. Those are useful offers, but they are not interchangeable. 2 3 4

The fastest climbs

The table is sorted by stars gained in GitHub's daily window, rather than by the board's display order. Total stars and primary language are the values shown on the board; the last column turns the README into a first move.

Rank	Repository	Stars gained	Total stars	Language	What it is and the first useful move
1	public-apis/public-apis	+2,260 1	460,347 1	Python	A large index of free APIs. Use it to find candidates for a prototype, then check each API's own terms and limits before making it a dependency. 5
2	cathrynlavery/diagram-design	+1,607 1	18,775 1	HTML	An agent-friendly system for editorial diagrams with self-contained HTML/SVG output, Mermaid and draw.io imports, and optional motion. Try it on one architecture or flow diagram your current agent made badly. 6
3	github/spec-kit	+892 1	129,266 1	Python	GitHub's open-source spec-driven workflow for AI coding agents. It requires Python 3.11+, Git, and a supported agent; the quick start uses `uv` to install `specify-cli`. Start here when unclear requirements are causing rework. 7
4	cordiverse/cordis	+599 1	4,185 1	TypeScript	A meta-framework for spatiotemporal composability. Its README says the API is under active development and may change without notice, so this is a watch-and-read candidate rather than a low-risk production dependency. 8
5	cactus-compute/needle	+547 1	6,116 1	Python	A 45M-parameter tool-calling and structured-extraction model packaged as a roughly 14 MB binary, using about 28 MB of RAM for a full session. After the first engine download, it can run offline; install with `pip install cactus-needle` and test your own tool schemas. 9
6	citrolabs/ego-lite	+545 1	11,070 1	JavaScript	A macOS browser that gives coding agents isolated Spaces for parallel browser work. Setup can migrate Chrome logins, cookies, extensions, and bookmarks, so decide that trust boundary before handing an agent an authenticated session. 10
7	ToolJet/ToolJet	+544 1	39,596 1	JavaScript	An AGPL-3.0 open-source base for internal tools, dashboards, workflows, and AI agents. Try the hosted route first; self-hosting spans Docker and Kubernetes, and the README recommends the LTS line for production. 11

Three worth opening first

Public APIs is the outlier. The star jump is much larger than the rest of the board, but the repository is a directory, not a single service you can install. Its value is speed: it gives a builder a broad list of possible building blocks without pretending that every entry has the same uptime, authentication, or terms. 5

Diagram Design is the quality bet. The README treats a diagram as an editorial artifact: typography, spacing, semantic roles, and accessibility matter alongside the boxes and arrows. It also keeps the standard output self-contained and static, which makes the result easier to inspect than a generated image. 6

Needle is the constraint bet. A small binary and offline inference are meaningful only when your device, privacy, or network budget is the bottleneck. The star count cannot tell you whether its tool-calling accuracy is good enough; run a small test set before replacing a larger model. 9

Free developer value to claim or try

1. Freebuff: a no-card coding-agent path

Freebuff's official site says its Desktop, CLI, Web, Cloud, and Chat products are free, supported by text ads. It says there is no API key, credit card, subscription, or lock-in, and lists macOS, Windows, and Linux downloads. Its Cloud route can connect to public or private GitHub repositories. 2

Who it fits: a builder who wants to try a coding agent without first buying a model subscription or configuring an API key.

How to claim: Open Freebuff, then choose the desktop app, CLI, Web builder, or Cloud route. The site gives the CLI path as cd your-project followed by freebuff; Cloud starts from a GitHub connection. 2

The catch: the page does not state a numeric daily usage limit. Treat the $0 promise as the current product offer, not as proof of unlimited private-repository or model capacity. Product Hunt's launch page also presents it as a newly launched free coding agent, which is useful for discovery but still gives you a reason to read the live terms before moving a serious project onto it. 12

2. North Mini Code: a new free coding model on OpenRouter

OpenRouter lists Cohere's North Mini Code at Free pricing. The model page describes a 30B-parameter sparse mixture of experts with 3B active parameters, a 256K-token context window, up to 64K output tokens, JSON-schema tool use, and an Apache 2.0 open-weight release. 4

Who it fits: a developer testing long-context coding or terminal-agent workflows who wants a model endpoint before paying for inference. The page says OpenRouter's API is OpenAI-compatible, so existing SDK code can usually keep its shape while the model slug changes. 4

How to try it: use the North Mini Code model page and select its displayed model slug. OpenRouter's official free-tier guidance says models with the :free suffix allow 50 requests per day and 20 requests per minute without a credit card. The daily limit rises to 1,000 requests when the account has at least $10 in credits. 13

The catch: this is a new free model inside a service the digest has covered before, not a new unlimited OpenRouter plan. Keep the 50-per-day and 20-RPM ceiling in your test plan, and measure tool-call reliability before treating the model as a production default. 4 13

3. Attyn: 500 launch credits for a Mac utility

Attyn's Product Hunt launch page says it adds inline rewriting, realtime dictation, screen assistance, and visual explanations inside the apps you already use. It supports provider keys and local models, runs on macOS today, and gives every new account 500 launch credits. 3

Who it fits: a Mac-based builder who wants a small, bounded trial for editing text, asking about the current screen, or generating an explanation without committing to another subscription.

How to claim: Visit Attyn from the launch page and create a new account. The 500-credit offer is attached to new accounts, so this is the item to try before the launch window or credit policy changes. 3

The catch: 500 launch credits are a trial allowance, not a permanent free tier. The same page says you can bring a provider key or use a supported local model after the credits, which makes the cost boundary clearer than calling the whole product free. 3

What to star, test, and claim

Star or test public-apis if you need a broad menu of free API starting points; validate each candidate before you build around it. 1 5
Open diagram-design when the problem is the quality and explainability of diagrams, not merely drawing a box-and-arrow sketch. 6
Try spec-kit when requirements keep changing, or needle when RAM, network access, and privacy matter more than frontier-model breadth. 7 9
Claim the free path that matches your machine: Freebuff for a no-card coding-agent trial, Attyn for 500 Mac launch credits, or North Mini Code for a bounded free model test on OpenRouter. Each offer has a real boundary; read that boundary before you make it part of a workflow. 2 3 4