https://www.braintreepayments.com/ lets developers accept payments in their app or website
http://www.elasticsearch.org/ enables data exploration by allowing developers to pose free-text or more structured queries to large volumes of data via aRESTful API. It’s built on top of the Lucerne Apache project, a Java-based text search engine.
Firebase is BaaS (backend as a service), a cloud database , replaces all the usual server-side infrastructure with highly scaleable and secure data storage. When one client updates the data repository, where data is stored via an API as JSON, the changes are synchronized by notifying all other clients
http://www.firepad.io/#1 Use Firepad’s rich text features for collaborative blogging, note taking, proofreading and much more!
https://www.heroku.com/ Platform as a Service (PaaS) companies and it supports Ruby, Node.js, Clojure, Java, Python, and Scala. PaaS services let developers concentrate on writing code rather than operating infrastructure by managing servers, deployment, and scaling for them. Over 4 million apps are deployed on Heroku.
http://www.jetbrains.com/ has been making developer tools like IDEs (Integrated Development Environments), including the widely used Java IDE IntelliJ, as well as continuous integration and project management tools for over 10 years. JetBrains is now creating a new statically typed language for the JVM called Kotlin.
http://pusher.com/ is a hosted service for adding real-time features like notifications, chats, and data feeds to web and mobile applications. Essentially, it lets developers offload a lot of the work of real-time synchronization to Pusher’s RESTful API. New information is sent to the API and Pusher uses awebsocket connection to push new updates to the browser instead of pulling them from the server.
http://sendgrid.com/ helped developers to deliver millions of transactional and marketing emails like purchase confirmations, without having to run their own email servers. To send email through SendGrid a developer just needs to change his email configuration to point to SendGrid’s servers.
http://www.twilio.com/voice by letting developers add voice, SMS, and VoIP functionality into web, desktop, or mobile software. You can even build an entire call center system with Twilio’s cloud API including call queuing, routing, and call recording.