I am wondering if anyone has any experience regarding self hosted private file sharing products. We are currently using an FTP to transfer technical data between our company and our vendors. We currently have 78 vendors and 15 internal users who would be accessing this to share files. Within the next 6-8 months I would like to implement a file sharing service that has some sort of web-based interface. I looked into Sharepoint but doing cost analysis it is way more than I'm willing to spend for a company our size. I ran across SynaMan which looks promising, especially the fact that it is a perpetually licensed product.