OrbLit vs. Litmaps — a free, open-source map built around your Zotero library
This page compares OrbLit and Litmaps for anyone deciding between the two. Both visualize citation networks. OrbLit is free and open source; Litmaps has a paid Pro tier. The practical differences are how Zotero fits in and where each tool's data comes from.
Feature comparison
| OrbLit | Litmaps | |
|---|---|---|
| Price | Free, open source | Free tier (20 searches, 2 maps, 100 articles/map) · Pro from ~$10/mo |
| Zotero sync | Import a whole collection + add papers back to Zotero (incl. PDF), one click | Zotero Sync is a Pro-only feature, not available on the free plan |
| Thematic clusters | Yes, automatic via embeddings + clustering | Not documented as a standalone core feature |
| Citation network visualization | Yes — interactive map built from citations & references | Yes, a core feature (timeline and network views) |
| Data source | OpenAlex (primary), with Semantic Scholar / Crossref abstract fallback | Semantic Scholar, OpenAlex, and Crossref combined |
| Collaboration / sharing | Not available | Team plan available (separate tier) |
OrbLit's citation network map — filled nodes are papers already in your collection, outlined nodes are discovery papers found around it.
When Litmaps is the better choice
- — It's been around longer and has a larger, more established user base in academic circles.
- — Pro includes automatic weekly alerts for new papers — OrbLit doesn't have this yet.
- — Its database blends three sources (Semantic Scholar, OpenAlex, Crossref) rather than one primary source.
When OrbLit is the better choice
- Zotero write-back is included — add papers straight from the map back into Zotero, not locked behind Pro like Litmaps' Zotero Sync.
- Thematic clusters and suggested related papers are included, not a paid add-on.
- Built on OpenAlex as the primary data source — a fully open, non-commercial database, not a proprietary blend with its own limits.