When you hit 'address already in use' or need to audit what's running locally, you end up squinting at lsof -iTCP or ss -tlnp ou
A new tool called port-map has been developed to simplify the process of auditing TCP ports on local machines. It addresses the common issue of encountering 'address already in use' errors by providing a user-friendly web dashboard. This tool runs on Node.js and requires no dependencies, making it easy to use for developers.
- ▪Port-map scans all listening TCP ports and presents the information in a filterable web dashboard.
- ▪The tool is built using pure Node.js and runs lsof on macOS or ss on Linux to gather port information.
- ▪It was created to alleviate the frustration developers face when dealing with complex command line outputs.
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| Original publisher | DEV.to (Top) |
| Canonical URL | https://dev.to/mumicrotools/when-you-hit-address-already-in-use-or-need-to-audit-whats-running-locally-you-end-up-squinting-4coa |
| Publication time | Tue, 19 May 2026 13:55:40 +0000 |
| Retrieval time | 2026-05-19T14:04:57.719Z |
| Last seen | 2026-05-19T14:04:57.719Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | e1rHJmLeHnaA |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3923619) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Mu Micro Posted on May 19 When you hit 'address already in use' or need to audit what's running locally, you end up squinting at lsof -iTCP or ss -tlnp ou #webdev #node #devtools #productivity The problem When you hit 'address already in use' or need to audit what's running locally, you end up squinting at lsof -iTCP or ss -tlnp output — walls of text with no filtering, no sorting, and process names truncated mid-word.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at DEV.to (Top).
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