witr
witr is a command-line and TUI tool that answers 'why is this process running?' by tracing the causality chain—showing what spawned a process, which supervisor started it, and what system context created it. It works across Linux, macOS, FreeBSD, and Windows with a single static binary.
Key facts
Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.
| Field | Value |
|---|---|
| Repository | pranshuparmar/witr |
| Owner | pranshuparmar |
| Primary language | Go |
| License | Apache-2.0 — OSI-approved |
| Stars | 18.2k |
| Forks | 566 |
| Open issues | 1 |
| Latest release | v0.3.3 (2026-06-24) |
| Last updated | 2026-07-06 |
| Source | https://github.com/pranshuparmar/witr |
What witr is
witr traces process ancestry and system causality (supervisors, containers, shells, services) to expose the full chain-of-responsibility for why a process exists. Written in Go with an interactive TUI dashboard mode, it correlates data typically spread across ps, systemctl, lsof, and container introspection into a single source.
Get the witr source
Clone the repository and explore it locally.
git clone https://github.com/pranshuparmar/witr.gitcd witr# follow the project's README for install & configurationNeed it deployed, integrated, or customized instead? DEV.co ships production installs.
Best use cases
Implementation considerations
- Requires OS-level process introspection privileges; may need elevated permissions on some platforms (Windows UAC, Linux capabilities) to see full ancestry chains.
- Single-machine focus: design integrations to feed witr output into centralized logging/monitoring systems if multi-host correlation is needed.
- TUI mode adds interactive exploration; CLI mode is suitable for scripting and automation; choose mode based on workflow (dashboard vs. pipeline).
- Platform differences exist (Linux proc, macOS launchd/kern, Windows WMI/Event Log): test on target platforms to confirm coverage of relevant supervisor/container types.
- No built-in time-series storage; use shell redirection or external systems to capture output over time for trend analysis.
When to avoid it — and what to weigh
- You need real-time performance profiling — witr focuses on causality chains, not CPU/memory/I/O metrics. Use perf, flamegraph, or top for performance analysis.
- You require centralized, multi-machine observability — witr is a single-machine CLI tool. For fleet-wide visibility, integrate with Prometheus, DataDog, or similar platforms instead.
- Your environment is purely containerized without host access — witr needs OS-level process introspection (proc filesystem, etc.). It may not work inside restrictive containers or without host privileges.
- You need formal SLA/compliance reporting — witr outputs human-readable diagnostic data, not structured compliance logs or audit trails. Pair with logging infrastructure for that use case.
License & commercial use
Licensed under Apache License 2.0, a permissive OSI-approved license permitting commercial use, modification, and distribution with attribution and liability disclaimers.
Apache-2.0 explicitly permits commercial use, modification, and redistribution. No licensing fees or restrictions on commercial deployment. Suitable for building commercial tools on top of witr as a dependency or bundling in proprietary products, provided Apache-2.0 notice is retained.
DEV.co evaluation signals
Editorial assessment — not user reviews. Directional, with an explicit confidence level.
| Signal | Assessment |
|---|---|
| Maintenance | Active |
| Documentation | Strong |
| License clarity | Clear |
| Deployment complexity | Low |
| DEV.co fit | Good |
| Assessment confidence | High |
witr performs OS-level introspection of running processes; security posture depends on privilege level and OS-specific introspection mechanisms. Ensure it is run with appropriate permissions (may require root/admin). No claims of encryption, sandboxing, or network isolation are stated. Verify output does not expose sensitive environment variables or credentials from traced processes. Use in isolated/trusted environments if examining production systems. No known vulnerabilities disclosed in provided data.
Alternatives to consider
ps + systemctl + lsof + manual correlation
Existing tools show state but require manual cross-referencing to infer causality. witr automates this correlation for faster incident response.
Prometheus + Grafana + node exporter
Good for fleet-wide metrics and alerting, but designed for time-series, not causality chains. Works alongside witr for comprehensive observability.
Auditd + systemd-journald logging
Captures process events and logs for compliance/audit, but requires centralized log analysis. witr offers immediate, interactive causality without log aggregation.
Build on witr with DEV.co software developers
Install witr in seconds and trace the causality chain for any running process. Use it standalone or integrate into your observability stack. Apache-2.0 licensed, zero dependencies.
Talk to DEV.coRelated on DEV.co
Explore the category and the services that help you build with it.
witr FAQ
Does witr require root or admin privileges?
Can I use witr in CI/CD pipelines or automation?
Does witr support containerized environments (Docker, Kubernetes)?
How does witr compare to debuggers like strace or gdb?
Software development & web development with DEV.co
From first prototype to production, DEV.co delivers software development services around tools like witr. Our software development agency staffs experienced software developers and web developers for custom software development, web development, integrations, and ongoing support across open-source devops and beyond.
Ready to Simplify Process Troubleshooting?
Install witr in seconds and trace the causality chain for any running process. Use it standalone or integrate into your observability stack. Apache-2.0 licensed, zero dependencies.