
The directory
Software for API
225 products matching your filters. Each one described on the same fields, so two tools can be read against each other rather than against their own marketing.
Showing 193–216 of 225


Together AI
Open-source AI at scale
Free plan, then $0.03/1m tokens- API
- Web
4 alternatives · 4 questions answered

Tomorrow.io
Weather intelligence platform for business decisions
Free- API
4 alternatives · 3 questions answered

Traceloop
LLM reliability platform with open-source observability and evaluation
Free- Web
- Self-hosted
- API
3 alternatives · 3 questions answered

Tray.io
The intelligent integration platform
Free plan, then $50/mo- Web
- API
4 alternatives · 1 limitation documented

TrueNAS
Open-source ZFS storage operating system for network-attached storage
Free- Self-hosted
- Linux
- Web
- +1
4 alternatives · 3 questions answered

Turborepo
High-performance build system for JavaScript and TypeScript monorepos
Free- API
4 alternatives · 2 questions answered

Twilio
Cloud communications platform for SMS, voice, and video
Free plan, then $0.0083- Web
- API
2 alternatives · 3 questions answered

TypeScript
JavaScript with syntax for types
Free- API
- Web
5 alternatives · 6 questions answered

Unbounce
Landing page platform with AI-powered conversion optimisation.
Free plan, then $29/mo- Web
- API
4 alternatives · 3 questions answered

Upstash
Serverless data for modern developers
Free plan, then $10/mo- API
- Web
5 alternatives · 6 questions answered

Userpilot
Product analytics and in-app onboarding platform.
Free plan, then $299/mo- Web
- iOS
- Android
- +1
4 alternatives · 3 questions answered

Vector
A Lightweight and Ultra-Fast Tool for Building Observability Pipelines
Free- Web
- API
4 alternatives · 4 questions answered

Vercel
Develop. Preview. Ship.
Free plan, then $20/user/mo- Web
- API
3 alternatives · 5 questions answered


Vizion
Container tracking API for developers
Free plan, then $0.1/per-container- API
4 alternatives · 2 questions answered

Vue.js
The Progressive JavaScript Framework
Free- Web
- API
3 alternatives · 3 questions answered

Vultr
High performance cloud compute
Free plan, then $2.5/mo- Web
- API
4 alternatives · 1 limitation documented

Webpack
Bundle your assets, scripts, images, and styles
Free- API
- Web
3 alternatives · 5 questions answered

Weights & Biases
Developer tools for machine learning
Free plan, then $60/mo- Web
- API
3 alternatives · 3 questions answered

Whatagraph
Automated marketing reporting and analytics
Free- Web
- iOS
- Android
- +1
4 alternatives · 4 questions answered

Windmill
Open-source developer platform for building scripts, workflows, and internal apps
Free plan, then $120/mo- Web
- API
- Linux
- +2
2 alternatives · 4 questions answered

Wireshark
The world's foremost network protocol analyzer
Free- Windows
- macOS
- API
4 alternatives · 3 questions answered

Writesonic
AI writing assistant for content creation
Free plan, then $39/mo- Web
- Browser extension
- API
3 alternatives · 2 questions answered
Head to head
Compared side by side
Pairings from this slice of the directory, each one checked by two reviewers who agreed a buyer would weigh the two against each other.
Browse another way
Every category, and the cuts people ask for
All 42 categories
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By platform
By what it costs
How this works
What you are looking at
Where does this data come from?
Pricing, platforms and feature lists are taken from each vendor's own pages. Limitations, answered questions and alternatives are researched separately and carry a source URL on the page that states them. Every product is described on the same fields, so two tools can be read against each other rather than against their own marketing.
Why are there no star ratings?
Because we did not collect any. Softwr hosts no reviews, and a rating aggregated from somewhere else is not ours to publish as though it were an assessment we made. What is shown instead is what a tool costs, where it runs, and what it is concretely bad at.
How are alternatives chosen?
A researcher proposes them, then two independent reviewers judge one question each: would a buyer evaluating this product seriously consider that one instead. 225 of 1,841 candidates failed and were deleted, including a font inspector matched to a dark mode extension. Only pairings that survived both rounds are published.
Do vendors pay to appear here?
Not to be listed. A vendor can buy a place in the results on the home page, on a category listing or on the catalogue, and where they do the result carries a Sponsored label. Everything not carrying that label is ordered on the same criteria as everything else, and a paid place never changes where an unpaid one lands: the editorial order flows around it. Where a link earns a commission that is disclosed on the page carrying it.
How current is it?
Prices and plan limits move without notice, so treat anything with a number on it as a starting point and check the vendor before you buy. Where a claim could go stale it carries the source it came from, which is the fastest way to tell.
Other ways to narrow it down
- Browse by categoryEvery category, and what sits in each one.
- Head to headTwo tools on the same fields, with a straight answer.
- Best ofA shortlist per category, and why each one made it.
- AlternativesWhat people move to, and what they give up doing it.
- Pricing, in fullWhat each tier actually costs, tier by tier.
Something missing here?
Anyone can submit a tool. A person reads every submission, checks the pricing against the vendor’s own page, and nothing is published until it passes.
