.NET Developer Tools
Three free tools that run the real .NET runtime in your browser. Each one is compiled to WebAssembly, so results come from the same .NET code you'd run on your machine, not a JavaScript imitation. Nothing you type is sent to a server.
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Cron Expression Parser
Validate a cron expression with Cronos (the engine behind Hangfire) and preview the next run times in any time zone.
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Connection String Builder
Build and parse SQL Server, PostgreSQL, and Redis connection strings using the actual .NET builder types.
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DateTime Format Tester
Try .NET custom and standard DateTime format strings against any culture and see exactly what ToString produces.