[AnkhMorporkian]

They obviously did some type checking on the name[1]. I'm sure they Squared up the UI elements while they were developing it[2]. The moments before launch must have been pretty tense though[3]. I just hope this service supports file uploads[4].

1. https://github.com/facebook/flow

2. https://github.com/square/flow

3. https://github.com/tensorflow/tensorflow

4. https://github.com/flowjs/flow.js

[toyg]

They probably used FTP while developing [5] and a lot of online chatting [6].

[5] http://fivedetails.com/flow/

[6] https://www.getflow.com/apps/

[chris_wot]

To get it done, they would have used project management [7] whilst management decided on EDI integration suites. [8]

7. https://www.getflow.com

8. http://www.flowsoftware.com

[vehementi]

Do you think they were a little bitter about Slack and probably used a competitor [9] instead?

9. https://www.flowdock.com/

[deanCommie]

https://aws.amazon.com/swf/details/flow/

[kenrick95]

This too https://www.mediawiki.org/wiki/Extension:Flow

[PerfectElement]

http://flowdj.com