Based on our record, Sling should be more popular than Apache Karaf. It has been mentiond 7 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Apache Karaf with OSGi works pretty nice using annotation based dependency injection with the declarative services, removing the need to mess with those hopefully archaic XML blueprints. Too bad it's not as trendy as spring and the developers so many of the tutorials can be a bit dated and hard to find. Karaf also supports many other frameworks and programming models as well and there's even Red Hat supported... Source: about 3 years ago
Using Sling (https://getsling.com/) for a distributed CS team. It's working pretty well. We're spread across six timezones, been using it for five months. Free version's done well enough for us. Source: almost 2 years ago
If you want to try a free product, Sling scheduling app is good. You can google the reviews to see if that match your needs. Source: about 2 years ago
But I think you might want to look at some more dedicated scheduling software like Sling. Source: over 2 years ago
I've used Sling with my guard team. It's primarily a scheduling app, but it also has messaging functions. Source: over 2 years ago
I suggest https://getsling.com it's not open source but the free version is really good. Take a shot at it. GL. Source: almost 3 years ago
Docker - Docker is an open platform that enables developers and system administrators to create distributed applications.
When I Work - When I Work is an employee scheduling and communication app using the web, mobile apps, text messaging, social media, and email.
GlusterFS - GlusterFS is a scale-out network-attached storage file system.
Deputy - Deputy is a software for employee scheduling, time and attendance and communication management.
Apache ServiceMix - Apache ServiceMix is an open source ESB that combines the functionality of a Service Oriented Architecture and the modularity.
ResourceGuru - The fast, simple way to schedule people, equipment, and other resources online.