Real-time error alerts, performance insights, and anomaly detection across your full stack. Free 30-day trial.
Move from alert to fix before users notice. AppSignal monitors errors, performance bottlenecks, host health, and uptime—all from one dashboard. Instant notifications on deployments, anomaly triggers for memory spikes or error surges, and seamless log management. Works out of the box with Rails, Django, Express, Phoenix, Next.js, and dozens more. Starts at $23/month with no hidden fees.
Try AppSignal Free
Cut Cloud Costs with Google Compute Engine
Save up to 91% with Spot VMs and get automatic sustained-use discounts. One free VM per month, plus $300 in credits.
Save on compute costs with Compute Engine. Reduce your batch jobs and workload bill 60-91% with Spot VMs. Compute Engine's committed use offers customers up to 70% savings through sustained use discounts. Plus, you get one free e2-micro VM monthly and $300 credit to start.
Kammerjäger is a debugging tool with integrated correctness proving.
Kammerjäger is a debugging and testing tool that enables you to prove the correctness of your code. In our C like programming language named "SimPL" you can easily and simply annotate your code with preconditions and assertions (also with forall and exists expressions). We then use Microsofts Z3 theorem prover to prove if the behaviour of your program matches what you expected.
The easy to use GUI with an integrated Interpreter and Debugger (with a Stackview and HotCodeReplacement) makes...