
Alpaca Data API
Robinhood
Alpaca Broker API
Alpaca Trading API
SparkFin
Real-time Market API
Bullish.email
Alpaca Fractional Trading API
Cachely.dev
nxCloud
Cachely is the managed self-hosted remote cache for Nx and Turborepo - the cache backend you'd otherwise build and run yourself, hosted for you on Cloudflare's edge (R2). It's a drop-in replacement for a DIY @nx/s3-cache / S3 bucket setup: point your build tool at Cachely with a token and two environment variables, and share build cache across CI and every developer's laptop.
Unlike a self-hosted cache, Cachely enforces read-only tokens at the API, so pull-request and fork builds can read but never write - closing the Nx cache-poisoning attack (CVE-2025-36852). It adds ROI reporting (the real build minutes and dollars the cache saved), per-tool insights, and build-optimization suggestions on top.
Pricing is a flat per-workspace subscription with no per-seat fees - add every developer, bot, and CI actor without watching the bill. Cachely never stores your source code; it caches only task outputs and their content hashes. Nx and Turborepo today; Bazel on the roadmap.
Alpaca Data API
Cachely.devBased on our record, Alpaca Data API seems to be more popular. It has been mentiond 8 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Have you looked at Alpaca's Market Data API or Polygon.io. Both premium options are reasonably priced and give you access to both historical and real time trades. Source: almost 4 years ago
I think https://alpaca.markets/data still offers free api keys for research purposes. Source: almost 4 years ago
Https://alpaca.markets/data - As you see you get 100% market coverage for all US exchanges and unlimited API / WebSocket access. They also have 1min bar historical data (I do not know about the tick level). I can not speak to the quality of the API Access as I have a TotalView subscription. Source: about 4 years ago
Free tier for researchers, now $99/month for the algotrading access (link: https://alpaca.markets/data). Source: about 4 years ago
Https://alpaca.markets/data free plan has 200 calls/minute limit which is what you want anyway. Source: over 4 years ago
Robinhood - Free stock trading service.
nxCloud - nxCloud is a commercial OwnCloud provider
Alpaca Broker API - Launch your own commission-free trading app
Alpaca Trading API - Simple REST API for commission-free stock trading
SparkFin - Learn the markets for free, profit forever.
Real-time Market API - Build trading apps with real-time market data in seconds.