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Smart test generation for software developers

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Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
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Based on our record, GitHub seems to be more popular. It has been mentioned 2484 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | tng.sh | github.com |
| Pricing | ||
| Company | Startup from the United States · 1 - 9 employees · 2025 | Startup from the United States · 500 - 999 employees · 2008 |
| Listed in |
In their own words, as submitted to SaaSHub.


TNG is a smart test generation tool that turns your code into complete test suites — in minutes, not hours. Built by developers, to save your time, ensure code quality, and free you from repetitive test writing. Currently supports Ruby and Python, with more languages coming soon. This tool was...
No description of GitHub yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing tng.sh and GitHub.
tng.sh's answer
Purpose-built, not generic
Unlike broad AI code assistants, TNG.sh is laser-focused on one thing: high-quality test generation.
No prompt engineering, no guesswork — just predictable, framework-native tests.
AST-based static analysis + fine-tuned LLMs
Deep code understanding through AST (Abstract Syntax Tree) parsing.
Generates real, runnable tests with anti-hallucination rules — not made-up methods.
Seamless developer workflow
Works where developers already are: CLI for automation & CI/CD, VS Code extension for day-to-day coding.
Minimal setup, instant value.
Cross-language roadmap
Ruby & Python today.
JavaScript, TypeScript, Go, and more coming next.
One tool, multi-language coverage.
Privacy-first
Zero data retention: your code never leaves your control.
Unlike chat tools, TNG.sh doesn’t store, train on, or leak your IP.
Built by developers, for developers
Born out of real frustration with repetitive test writing.
Every feature solves problems we’ve faced in production ourselves. In short: TNG.sh saves you hours, integrates seamlessly, and guarantees real, runnable tests — with zero compromise on privacy.
tng.sh's answer
Built for tests, not everything
Competitors are broad AI assistants → unfocused, inconsistent.
tng.sh is purpose-built for one job: generating high-quality, runnable tests.
Real tests, not guesses
Competitors rely on prompts and often hallucinate methods.
tng.sh uses AST-based static analysis + fine-tuned LLMs → framework-native, predictable, CI-ready tests every time.
Saves time, every run
Competitors = back-and-forth, lots of manual fixes.
tng.sh = production-ready tests in 1–2 minutes, with up to 22× faster output than manual writing.
Seamless developer workflow
Competitors force you into new tools or chat UIs.
tng.sh plugs in where you already are → CLI, VS Code, and CI/CD.
Privacy first
Competitors often store and train on your code.
tng.sh never stores or retains your code — zero data retention by design.
Grows with your stack
Ruby & Python today.
JavaScript, TypeScript, Go, PHP coming soon → one tool, multi-language future. In short: tng.sh is faster, safer, and more consistent than generic AI tools — because it was built by developers who know the pain of testing.
tng.sh's answer
Software Developers & QA Engineers Developers who spend too much time writing and maintaining repetitive tests for Ruby, Python, and soon JavaScript projects.
Tech Leads & Engineering Managers Leaders who need higher test coverage, faster delivery, and more predictable quality without overloading their teams.
Startups & Growing Teams Small teams under pressure to ship features quickly, where developer time is the most valuable currency.
Enterprises Modernizing Legacy Code Companies with large, untested codebases that need reliable test coverage to move fast without breaking production.
tng.sh's answer
TNG.sh wasn’t born in a boardroom — it was born in the trenches of real software projects.
Our team had spent years writing and maintaining tests for Ruby on Rails and Python applications. Again and again, we saw the same pattern:
Deadlines always won.
Tests took hours or even days.
Legacy code felt like walking through a minefield with zero coverage.
Developers were frustrated. Managers were frustrated. Features slowed down.
We asked ourselves: What if generating tests could be as fast and natural as writing code itself?
That question became the seed for TNG.sh.
We built a precision tool that deeply understands your code with AST-based static analysis, then combines it with fine-tuned LLMs to generate production-ready tests in minutes, not hours.
Unlike generic AI assistants, TNG.sh is:
Purpose-built for tests → predictable, framework-native results.
Privacy-first → zero data retention, your code stays yours.
Seamless → works in CLI, VS Code, and CI/CD without overhead.
It’s more than just a tool — it’s a way to give developers back their most valuable resource: time.
In short: TNG.sh is the result of our own pain as developers — a tool we wish we’d had years ago, now built for every team that wants to ship faster, safer, and with confidence.
tng.sh's answer
TNG.sh combines modern programming languages and AI with proven developer tooling:
Core Engine: Built with high-performance systems programming (Rust, Python).
Code Intelligence: Advanced static code analysis with AST parsing for Ruby, Python, and JavaScript (in beta).
Test Generation: Fine-tuned machine learning models specialized for test creation and framework patterns.
Developer Interfaces: Simple, familiar tools — CLI packages and a VS Code extension — designed for seamless integration into daily workflows.
Privacy by Design: Cloud-backed but zero data retention — code is never stored or reused.
In short: Static analysis + AI + developer-friendly interfaces.
tng.sh's answer
TNG launched in September 2025 and is currently in its early growth phase with 1,000+ developers actively using the platform.
Since many of our customers prefer to stay private during beta, we describe our user base like this:
By company size:
Seed to Series C startups (fintech, healthtech, SaaS)
Development agencies managing multiple client projects
Individual developers inside Fortune 500 companies
By use case:
Startups reaching 90%+ test coverage before Series A
Agencies cutting project delivery time by 40%
Enterprise teams modernizing legacy codebases
Results across all customers:
94% average test coverage
22× faster than manual test writing
50,000+ tests generated in the first month
We are committed to privacy-first relationships and will publish detailed case studies with customer permission in Q4 2025.
Interested in becoming a design partner? We offer early adopter pricing and direct access to our founding team.
Share your experience with using tng.sh and GitHub. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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GitHub is an essential platform for modern software development. It makes it easy to host, manage, and collaborate on code while providing powerful tools for version control, project management, and team...
GitHub Discussions is a communication forum for the community around an open source or internal project. Discussions enable fluid, open conversation in a public forum. Discussions are transparent and accessible, but...
However, like any (human) product, the platform has its limits, downsides, and critics. GitHub has been barred by certain governments, and even if that isn’t exactly the company’s fault, the users are the ones limited...
Recommendations tracked on public social media and blogs since March 2021.


Tracking tng.sh since Sep 2025.
For developers who cannot access Fable 5, Claude Opus 4.8 offers the best alternative. Integrating this model into your daily workflow is straightforward, especially when using modern development platforms like GitHub for repository... - Source: dev.to / about 1 month ago
1228 push attempts died with fatal: could not read Username for 'https://github.com' — an https remote with no credential helper and no stored Credentials. First one 2026-07-21T20:48:03Z, still failing as I write this. Thirty-nine Days. - Source: dev.to / 17 days ago
They can include the protocol, it’s that regardless of what’s put in there it’ll use https, which is explained with examples both in the following sentences and then in more detail in a linked doc. > For repositories on GitHub, GitLab,... - Source: Hacker News / 20 days ago
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