Jurriaan Persyn

Used for all mockups of new & improved features. Discussing Sketch files happens via InVision, creating style guides of Sketch files via Zeplin. Sketch

Vowpal-Wabbit powers our online-learning prediction engine, that suggests our users replies to send out, and labels to add to their data, based on previous behavior by that user. vowpal-wabbit

Helps us in showing thumbnails & detailed images for urls found in tracked social data. Embedly

Several of the visualisations in our Insights pages use D3.js as their engine. D3.js

Used a distributed filesystem to have files available on several machines. E.g. used for uploading images to the supported social networks from an array of worker nodes. GlusterFS

Used as main Server Monitoring (load averages, system metrics) and App Monitoring (via custom plugins) tool. Both for graphing data as for sending alerts. Server Density

BrowserStack is used by our development and support teams during QA and to try and reproduce bugs. BrowserStack

We use HAProxy to load balance web requests for our web application, but also for some internal load balancing of microservices. HAProxy

Used for graphing internal logging data; including metrics related to how fast we serve pages and execute MySQL/ElasticSearch queries. Kibana

All wireframes & mockups for new features & updated features are stored, commented & revised via InVision. InVision