No moat. Still in business.
Software directory for those who don’t want to rebuild, own the updates, the bugs, the support.
- Sendwithus
Lets teams edit, test and send transactional email templates without code deploys, with A/B tests and analytics.
Since 2014
Subscription · Transactional email · Software companies
- Audienceful
Email marketing app for sending newsletters, campaigns and automated sequences, built for teams that write together.
Since 2018
Free plan · Email marketing · Online sellers
- Quadratic
Spreadsheet that links to databases and files and lets AI write the formulas, Python and charts for you.
Since 2023
Data and spreadsheets
- Unleash
Feature flag service that lets software teams roll out, test and switch off features in production without redeploying.
Subscription · Developer tools · Developers
- Qonversion
Handles in-app subscriptions for mobile apps, with a paywall builder, price tests and revenue reports for app teams.
Free plan · Payments and checkout · Developers
- Flyn
Create branded short links and QR codes, track clicks and route visitors by device or country, for marketing teams.
Since 2026
Free plan · Marketing and social
- pbar.io
Lets developers share live progress of scripts and jobs through a link, via an API or a tqdm replacement.
Uptime and monitoring · Developers
- redirs
Point any domain at any URL with automatic HTTPS, path rules and hit analytics, no server to run.
Free plan · Website builders
- GrowthBook
Feature flags and A/B tests that read results from your own data warehouse, for software product teams.
Free plan · Website analytics · Software companies
- ConfigCat
Turn app features on or off and roll them out to chosen users without redeploying, with unlimited team seats.
Free plan · Developer tools · Developers
- Joystick
Lets app and game developers change settings and run A/B tests remotely, without shipping a new build or waiting for store review.
Developer tools · Developers
- Doppler
Design, send and measure email campaigns and push messages, with a WooCommerce plugin for online shops.
Free plan · Email marketing
- AIR Blackbox
Records every AI agent decision in a signed, tamper-evident log so teams can show regulators what their AI did under the EU AI Act.
Since 2026
Free plan · Developer tools · Developers
- FeatBit
Feature flags for software teams to roll out changes to chosen users, watch error rates and roll back bad releases.
Free plan · Developer tools · Developers
- Flagsmith
Feature flags and remote config so software teams can release to user segments, run tests and switch features off fast.
Free plan · Developer tools · Developers
- Weco AI Functions
Turns a one-line description into a live AI API endpoint with typed output, model comparison and usage logs.
Since 2025
Free plan · Developer tools · Developers
- Appliku
Sets up and manages your own cloud server to deploy Django apps, with a dashboard, CLI and API.
Since 2021
Free plan · Developer tools · Developers
- Spectry
Shows where site visitors get stuck through heatmaps, replays and funnels, then lets you A/B test fixes.
Since 2026
Free plan · Website analytics
- MailBluster
Low-cost email campaigns to large lists, with a drag and drop editor, segments and split tests, for small businesses.
Free plan · Email marketing
- GO Feature Flag
An open-source feature flag service built on OpenFeature for gradual rollouts, A/B tests and quick rollbacks in your apps.
Free · Developer tools · Developers
- Tggl
Feature flags, gradual rollouts and A/B tests so developers ship behind toggles and product teams control releases.
Since 2023
Free plan · Developer tools · Developers