1
Madrigal Database
cedar.openmadrigal.orgAlso covers datasets, open data, and python
The Madrigal Database manages and serves archival and real-time data from upper-atmosphere science instruments in multiple formats.
Alternatives
The Best vectara/hallucination-leaderboard Alternatives in 2026
24 alternatives1 free · 1 open source
Looking for something like vectara/hallucination-leaderboard? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan and 1 are open source.
About vectara/hallucination-leaderboardgithub.com/vectara/hallucination-leaderboard
Visit"leaderboard Comparing LLM Performance at Producing Hallucinations when Summarizing Short Documents".
Top picks at a glance
First suggestionMadrigal DatabaseThe Madrigal Database manages and serves archival and…Free or freemium optionForschungsdatenzentrum am IQBThe IQB Research Data Centre supports use and provision of…Open source optionRDataSetsRDatasets.jl gives Julia users access to many datasets…Another optionCHIANTISearch CHIANTI, an atomic database for spectroscopic…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Madrigal Database | — | Not stated | Web |
| 2 | CHIANTI | — | Not stated | Web |
| 3 | Linked COVID-19 Data | — | Not stated | Web |
| 4 | RDataSets | — | Yes | — |
| 5 | Forschungsdatenzentrum am IQB | Free | Not stated | Web |
| 6 | Office for National Statistics | — | Not stated | Web |
| 7 | Uddevalla Municipality Open Data portal | — | Not stated | Web |
| 8 | Vision Zero Report Card | — | Not stated | Web |
| 9 | WOVOdat | — | Not stated | Web |
| 10 | Svenljunga Municipality Open Data portal | — | Not stated | Web |
All vectara/hallucination-leaderboard alternatives
2
CHIANTI
chiantidatabase.orgAlso covers datasets, open data, and python
Search CHIANTI, an atomic database for spectroscopic diagnostics of astrophysical plasmas.
3
Linked COVID-19 Data
covid19data.linkAlso covers datasets, open data, and python
Linked COVID-19 Data transforms public datasets into RDF and provides demonstration dashboards through a SPARQL endpoint.
4
Also covers datasets, open data, and open source · same kind of open-source project
RDatasets.jl gives Julia users access to many datasets distributed with the R ecosystem.
5
Also covers datasets and open data · free
The IQB Research Data Centre supports use and provision of research data, including free access to national school performance study data.
6
Office for National Statistics
ons.gov.ukAlso covers datasets and open data
The UK Office for National Statistics produces official statistics and serves as the country’s national statistical institute.
7
Uddevalla Municipality Open Data portal
uddevalla.se/psidataAlso covers datasets and open data
Uddevalla's open data page links to Kolada indicators for comparing municipal services and resource use.
8
Vision Zero Report Card
accidentlawyerreview.com/research/vision-zero-…Also covers datasets and open data
The 2026 Vision Zero Report Card tracks truck fatalities across 19 U.S. cities and compares progress among Vision Zero adopters.
9
WOVOdat
wovodat.orgAlso covers datasets and open data
WOVOdat catalogs volcano unrest records and provides tools for searching and comparing activity over time.
10
Svenljunga Municipality Open Data portal
svenljunga.se/psidataAlso covers datasets and open data
Svenljunga's open data page links to municipal indicators in Kolada for comparing services and resource use with other municipalities.
11
College ROI Dataset
github.com/thomasthinks/college-roi-dataAlso covers datasets and open data · same kind of open-source project
This dataset reports 30-year net present value for U.S. colleges and majors, drawing on FREOPP, IPEDS, and BEA data.
12
latamdata-py
github.com/juanmoisesd/latamdata-pyAlso covers open data and python · same kind of open-source project
latamdata-py provides one line access to 38 open research datasets from Latin America.
13
Also covers datasets and open data
NASA Open APIs provides programmatic access to data and services from NASA.
14
Also covers datasets and open data
data.world provides an enterprise data catalog for discovering metadata and developing data products and analytics.
15
Repositorio de Acceso Abierto BUAP
repositorioinstitucional.buap.mxAlso covers datasets and open data
BUAP’s open access repository contains documents deposited by professors and researchers, with communities, collections, and search fields.
16
Fiquem Sabendo
fiquemsabendo.com.brAlso covers datasets and open data
Fiquem Sabendo, a Brazilian nonprofit, provides guidance on accessing public information and publishes documents obtained through its work.
17
Fly-FISH
fly-fish.ccbr.utoronto.caAlso covers datasets and open data
Fly-FISH documents the subcellular expression patterns of Drosophila coding and noncoding RNAs across specified life stages and tissues.
18
Forschungsdatenzentrum des Deutschen Jugendinstituts
surveys.dji.deAlso covers datasets and open data
The German Youth Institute documents its research data, tracing studies from their design through individual variables.
19
Producción Académica UCC
pa.bibdigital.uccor.edu.arAlso covers datasets and open data
Producción Académica UCC lets visitors browse university research by year, author, subject, document type, and academic unit.
20
Flora von Frankfurt am Main
flora-frankfurt.senckenberg.deAlso covers datasets and open data
Flora Frankfurt documents plant diversity, distribution, ecology, and history in Frankfurt, with species profiles, maps, and images.
21
LMU-ifo Economics & Business Data Center
ifo.de/ebdcAlso covers datasets and open data
The LMU-ifo Economics and Business Data Center documents research datasets and supports their archiving and secondary use.
22
RU-IIEc
ru.iiec.unam.mxAlso covers datasets and open data
RU-Económicas lets visitors browse repository documents by JEL classification and search the University of Seville's economics records.
23
OpenTrials
opentrials.netAlso covers datasets and open data
The archived OpenTrials project aimed to locate, link, and share publicly accessible data and documents about clinical trials.
24
Repositorio Institucional UCASAL
bibliotecas.ucasal.edu.ar/opac_css/index.php?l…Also covers datasets and open data
UCASAL’s repository stores academic and scientific output, including theses, articles, presentations, and other institutional documents.
No alternatives match this filter.
Alternatives to similar tools
data.world24 alternativesNASA API24 alternativesRepositorio de Acceso Abierto BUAP24 alternativesForschungsdatenzentrum am IQB24 alternativesMadrigal Database24 alternativesUddevalla Municipality Open Data portal24 alternatives
What is the best alternative to vectara/hallucination-leaderboard?
Based on features, tags and platforms, the closest alternatives to vectara/hallucination-leaderboard are Madrigal Database, CHIANTI, and Linked COVID-19 Data.
Is there a free alternative to vectara/hallucination-leaderboard?
Yes. Forschungsdatenzentrum am IQB is free or offer a free plan.
Are there open-source alternatives to vectara/hallucination-leaderboard?
Yes: RDataSets.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative