Shotgun is described as 'Software makes project management and pipeline tools that help creative studios track, schedule, review, collaborate, and manage their digital assets' and is an app in the office & productivity category. There are more than 10 alternatives to Shotgun for a variety of platforms, including Online / Web-based, Mac, Windows, Linux and SaaS. The best alternative is ftrack. It's not free, so if you're looking for a free alternative, you could try Phraseanet or ResourceSpace. Other great apps like Shotgun are Filestage, Kitsu, Yamdu and Cerebro Project Management.
Filestage is a web application to share, review and approve media content with teams and
clients. You can comment directly into the files and invite your clients to review your files, without sign-up.
Streamline your creative workflow!.
ResourceSpace is an open source Digital Asset Management system originally developed for Oxfam by UK company Montala Limited in 2006. Montala continue to manage the project in addition to providing commercial hosting, support and development services relating to the software.
Cerebro is a project management system with a toolset for collaboration on visual content. It been developed to meet special demands of advertising agencies, VFX/CGI and animation facilities, TV production and post-production companies, web studios.