devenv vs ServBay

devenv uses Nix to define development environments for teams and CI. A project configuration can specify packages, languages, services, tasks, secrets, variables, files, and shell scripts. The project lists 58 supported languages and 42 preconfigured services, including PostgreSQL, Redis, MySQL, RabbitMQ, and Elasticsearch. Processes can be supervised with dependencies and restarts, while tasks can run in parallel and integrate with shells or commits. SecretSpec can read declared secrets from sources such as Keychain, 1Password, LastPass, dotenv, and environment variables. devenv can build OCI containers and run integration tests with its processes active; documentation also describes GitHub Actions use for checks, builds, and tests. It requires Nix and works on Linux, macOS, and WSL. As of devenv 2.4, the project no longer builds, tests, or releases it for Intel Macs. Projects must be explicitly trusted before automatic activation. The software is free and MIT licensed, with GitHub and Discord linked for help and community. Cached shell startup is listed as under 100 ms after the first build; devenv Cloud is in private beta.

ServBay manages local web development environments on macOS and Windows, bringing language runtimes, databases and web servers into one desktop tool. It includes versions of PHP, Python, Node.js, Go, Java,.NET, Ruby and Rust, plus Apache, NGINX and Caddy. Developers can assign runtime versions to projects and switch installed service versions through its management interface. Local services include DNS, mail testing, MinIO object storage and RabbitMQ; built-in PKI supports local HTTPS, and ServBay can manage certificates through ACME. Its MCP server works with Claude Code, Cursor, Codex and other MCP clients, which can manage services and packages, create sites with local DNS and SSL, operate databases, read logs and run diagnostics. The AI Gateway provides one local endpoint for cloud and local model providers, with usage tracking, virtual keys and automatic fallback. ServBay says provider API keys stay encrypted on the user’s machine and are not uploaded. The free plan costs nothing and is limited to five websites and five DNS records. Pro starts at $9.90 a month; a 7-day trial is listed.