Ruby on Rails

Full text search

Solr
ElasticSearch

Async tasks processing

Sidekiq
Redis

Comunication
Instant messaging

RabbitMQ (AMQP)
WebSocket

Paymant systems integration

Scripe
PayPal
Liqpay

Integrations

Gmaps
Cloudinary
Sproutvideo integration

Social Media integration

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custom share functionality
(Facebook, Google +, Twitter, Vkontakte)