openDesktop.org - The website openDesktop.
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
SourceForge - The Complete Open-Source and Business Software Platform.
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.
Eclipse - Eclipse is an open source community, whose projects are focused on building an open development platform comprised of extensible frameworks, tools and runtimes for building, deploying and managing software across the lifecycle.
n8n.io - Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.