Build checks and releases
Jenkins
Consider it when you already have someone who can maintain the build service, its plugins and its workers.
Tools Library — Page 16
Compare tools for building and running a web app. See what each one does, what it costs, and what you’ll need to set up.
Browse all tools
Showing 361–384 of 778 tools
Web search and public data extraction
Jina AI
Use Reader when you have an approved public address and need a readable copy to compare with the original.
Project management
Jira
Use it when a team needs a shared queue with explicit handoffs and may also want to link code changes.
Forms and surveys
Jotform
Use it when an organizer needs to follow up on individual submissions and save their attachments separately.
SaaS starters and templates
Jumpstart Pro
Consider it for a Rails team building a paid app with personal or shared customer accounts.
Email marketing
Kit
Consider Kit if a newsletter and a short welcome series are central to your work.
Notifications and messaging
Knock
Use it when an app update needs a feed item, an optional follow-up or a digest instead of an alert for every event.
Languages and runtimes
Kotlin
Consider it when you are changing an Android app or a Kotlin or Java service that already fits the project.
RAG and vector data
LangChain
Consider it if you need the search to work with services your app already uses and have development help.
Automation
Langflow
Compare it when you want to inspect what each step contributed to a draft answer or text transformation.
AI evaluation
Langfuse
Use it when an answer is wrong and you need to see what the app sent, which step produced the result and whether a change helps on a fixed test set.
Agent frameworks
LangGraph
Consider it if you can draw what should happen at each stage and need the app to resume the same work after a human decision.
AI evaluation
LangSmith
Use it when an AI feature gives a wrong answer and you need to tell whether it found the wrong information or used the right information incorrectly.
Web frameworks
Laravel
Use Laravel when a web app needs shared records and you want the page, form rules and database work in one server project.
Social distribution
Later
It fits when the announcement depends on images or short clips and you want to see which versions need a final edit in Instagram.
Feature flags and experiments
LaunchDarkly
Consider it when you need to manage the same change across separate environments or give selected users or accounts a version.
Maps and location
Leaflet
Compare it when your app already knows where to put its pins and you want control over the map people see.
Payments
Lemon Squeezy
Lemon Squeezy is useful when you want the same store to take payment and deliver a digital product. Check store approval and what you’ll pay on repeat, international or PayPal orders.
CRM and sales
Less Annoying CRM
Use it when different people follow up with customers and you want to see whose calendar holds the next task.
Rich text editors
Lexical
Compare it when your app needs custom editing behavior and you can build and maintain the editor interface around it.
Web performance
Lighthouse
For people who want a first diagnostic report on a page they can open in Chrome.
Forms and surveys
LimeSurvey
Consider it for a survey where who can answer, how answers are recorded and where the survey runs are separate decisions.
Project management
Linear
Useful when people working on an app need to see which change addresses an issue and what still has to happen before it reaches users.
Paid acquisition
LinkedIn Campaign Manager
Use it when you want to reach people in a professional audience and can define a result such as a completed business inquiry.