I've built a project management and collaboration platform for teams called Vabotu.
The problem: nowadays teams are forced to use several tools like Slack, Trello, Asana, Dropbox and Invision among others to coordinate their projects.
Solution: I'be built a FREE proprietary platform that includes all of the tools essential for project coordination into one tool.
You can read more at vabotu.com
• How I got to 1300+users: I posted Vabotu on Product Hunt (do a good job in terms of screenshots, descriptions etc)
• I created several posts on my blog at Vabotu discussing how Vabotu is the ideal tool for any team
• Created several mini-ads and posted them on Dribbble
• Same content that I posted on my blog, I'be published across Facebook, Twitter and LinkedIn
• I gave out up to 50GB worth of space within Vabotu for referrals