The software must be similar to google hangout. The company has different departments so messaging and file sharing can be done in groups (departmental) or there can be private chats for individuals within a department.
32 freelancers are bidding on average $519 for this job
I can build a Video CALL, CHAT, SEND FILE system with WebRTC teachnology. Relevant Skills and Experience PHP, MySQL Proposed Milestones $700 USD - Complete
chat app /? please describe in details what features you want Relevant Skills and Experience web and mobile Proposed Milestones $600 USD - 20% upfront lets discuss