Abstrackr vs Nested Knowledge
Abstrackr
abstrackr.comNested Knowledge
nested-knowledge.comSide by side
| Figure | Abstrackr | Nested Knowledge |
|---|---|---|
| Price from | Free | $19.95/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Plans published | 1 | 6 |
| Spec score · Literature Review Software | 8.0 (#7) | 7.6 (#20) |
| Spec score · Systematic Review Software | 8.0 (#9) | 7.7 (#22) |
| Spec score · AI Literature Review Software | 8.0 (#12) | 7.6 (#23) |
| Intended users | The site describes Abstrackr as serving researchers, librarians, and review teams conducting systematic reviews. | The maker describes the platform for academic researchers, technological innovators, biotech organizations, and life sciences teams. |
| Purpose | Abstrackr is a citation-screening tool for systematic reviews. | Nested Knowledge is a systematic review and evidence synthesis platform for searching, screening, extracting data, critical appraisal, and sharing results. |
| Support | The site directs users to its community forum for methodology questions and workflow discussions. | The maker directs users to its support page or [email protected] for technical issues. |
Plans
Nested Knowledge
- Academic$19.95 a month
- Academic+$69.95 a month
- Business Essentials$295 a month
- Enterprise$695 a month
- Enterprise PlusPriced on request
- InstitutionalPriced on request
In their own words
Abstrackr
Abstrackr is a free web tool for screening citations in systematic reviews. It supports solo work, blinded team screening, pilot rounds, and conflict resolution. After about 100 labels, machine learning ranks remaining citations by predicted relevance. A live PRISMA flow table records screening thresholds, resolved conflicts, exclusion reasons by tag, and analysis of the model’s stop point. Citations can be imported from PubMed, Scopus, or Embase, or uploaded as RIS and CSV files. The service deduplicates records by DOI and PMID and can merge remaining near-duplicates. Results export as CSV or RIS, with a full JSONL download for DuckDB queries. Blinding starts enabled, and changes are logged with user, reason, timestamp, and project snapshots. Member and Leader roles have no stated team-size limit, while reminders arrive 7, 4, and 1 day before deadlines. No installation is needed, and the site directs methodology questions to its community forum.
Nested Knowledge
Nested Knowledge has no write-up on Specifiction yet; its figures are above.