1
ATOMDB
atomdb.orgAlso covers datasets and open data · same kind of website
Explore ATOMDB's astrophysics data resources, including spectra, plasma diagnostics, and database files.
Alternatives
The Best CHIANTI Alternatives in 2026
24 alternatives1 free · 1 open source
Looking for something like CHIANTI? 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.
Search CHIANTI, an atomic database for spectroscopic diagnostics of astrophysical plasmas.
Top picks at a glance
First suggestionATOMDBExplore ATOMDB's astrophysics data resources, including…Free or freemium optionLXcatLXcat lets users browse and download plasma data, use…Open source optionvectara/hallucination-leaderboard"leaderboard Comparing LLM Performance at Producing…Another optionMadrigal DatabaseThe Madrigal Database manages and serves archival and…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | ATOMDB | — | Not stated | iOS, Web |
| 2 | Madrigal Database | — | Not stated | Web |
| 3 | Handbook of Basic Atomic Spectroscopic Data | — | Not stated | Web |
| 4 | Linked COVID-19 Data | — | Not stated | Web |
| 5 | NIST Atomic Spectral Line Broadening Bibliographic Database | — | Not stated | Web |
| 6 | vectara/hallucination-leaderboard | — | Yes | — |
| 7 | DataViva | — | Not stated | Web |
| 8 | LXcat | Free | Not stated | Web |
| 9 | INPTDAT | — | Not stated | Web |
| 10 | CCC Data Base | — | Not stated | Web |
All CHIANTI alternatives
2
Madrigal Database
cedar.openmadrigal.orgAlso covers datasets, open data, and python · same kind of website
The Madrigal Database manages and serves archival and real-time data from upper-atmosphere science instruments in multiple formats.
3
Handbook of Basic Atomic Spectroscopic Data
nist.gov/pml/handbook-basic-atomic-spectroscop…Also covers datasets and open data · same kind of website
NIST’s Handbook of Basic Atomic Spectroscopic Data provides reference data maintained by its Physical Measurement Laboratory.
4
Linked COVID-19 Data
covid19data.linkAlso covers datasets, open data, and python · same kind of website
Linked COVID-19 Data transforms public datasets into RDF and provides demonstration dashboards through a SPARQL endpoint.
5
NIST Atomic Spectral Line Broadening Bibliographic Database
physics.nist.gov/cgi-bin/ASBib1/LineBroadBib.cgiAlso covers datasets and open data · same kind of website
NIST’s Atomic Spectral Line Broadening Bibliographic Database provides references about atomic spectral line broadening, from 1889 onward.
6
Also covers datasets, open data, and python · open source
"leaderboard Comparing LLM Performance at Producing Hallucinations when Summarizing Short Documents".
7
DataViva
dataviva.infoAlso covers datasets and open data · same kind of website
DataViva presents Brazilian socioeconomic data through regional diagnostics, interactive charts, rankings, and research labs.
8
Also covers datasets and open data · same kind of website · free
LXcat lets users browse and download plasma data, use online calculations, and access data categories and contributor information.
9
INPTDAT
inptdat.deAlso covers datasets and open data · same kind of website
INPTDAT provides access to research data in applied plasma physics and plasma medicine, covering materials, processes, and related fields.
10
CCC Data Base
atom.curtin.edu.au/CCC-WWW/index.htmlAlso covers datasets and open data · same kind of website
Search atomic target data in the CCC Data Base by element and explore its listed atomic records.
11
OPEN-ADAS
open.adas.ac.ukAlso covers datasets and open data · same kind of website
OPEN-ADAS lets users search atomic data by element, ion, wavelength, or other parameters.
12
Atomic & Molecular Database
camdb.ac.cn/eAlso covers datasets and open data · same kind of website
Browse atomic data on ionization potentials, energy levels, spectra, and particle collisions in CAMDB.
13
Atomic Data for Astrophysics
pa.uky.edu/~verner/atom.htmlAlso covers datasets and open data · same kind of website
Explore atomic data for astrophysics, including information on photoionization, recombination, and collisional processes.
14
The Atomic Line List
linelist.pa.uky.edu/atomicAlso covers datasets and open data · same kind of website
The Atomic Line List compiles calculated wavelengths for allowed, intercombination, and forbidden atomic transitions.
15
R. L. Kurucz atomic linelist
lweb.cfa.harvard.edu/amp/ampdata/databases.htmlAlso covers datasets and open data · same kind of website
Browse Kurucz atomic line lists alongside links to related astronomy and molecular databases.
16
Autism Chromosome Rearrangement Database
projects.tcag.ca/autismAlso covers datasets and open data · same kind of website
Search structural variants in autism spectrum disorder through the Autism Chromosome Rearrangement Database.
17
The Paleobiology Database
paleobiodb.orgAlso covers datasets and open data · same kind of website
The Paleobiology Database provides tools to search and download records about fossils and paleobiology.
18
Freshwater Research and Environmental Database
fred.igb-berlin.deAlso covers datasets and open data · same kind of website
FRED is a freshwater research and environmental database with search and map views for study sites, samples, parameters, and species groups.
19
PeptideAtlas
peptideatlas.orgAlso covers datasets and open data · same kind of website
PeptideAtlas provides a proteomics data repository with database search, dataset builds, and data contribution options.
20
DNA Data Bank of Japan
ddbj.nig.ac.jp/index-e.htmlAlso covers datasets and open data · same kind of website
DDBJ supports searching and retrieving database records, data submissions, and related services through Japan's DNA Data Bank.
21
Swedish eHealth Agency Open Data portal
ehalsomyndigheten.se/yrkesverksam/statistik-oc…Also covers datasets and open data · same kind of website
Sweden's eHealth Agency provides open statistics that users can search, compare, and export from its statistics database.
22
CATH
cathdb.infoAlso covers datasets and open data · same kind of website
Search and browse CATH's database classifying protein structures, with options to find a protein structure.
23
Golm Metabolome Database
gmd.mpimp-golm.mpg.deAlso covers datasets and open data · same kind of website
The Golm Metabolome Database supports searching and sharing mass spectra for biologically active metabolites measured with GC-MS.
24
Chizaizukan
chizaizukan.comAlso covers datasets and open data · same kind of website
Search Chizaizukan's intellectual property database by tags, industry, company, and other project categories.
No alternatives match this filter.
Alternatives to similar tools
Madrigal Database24 alternativesvectara/hallucination-leaderboard24 alternativesCCC Data Base24 alternativesAtomic Data for Astrophysics24 alternativesThe Paleobiology Database24 alternativesGolm Metabolome Database24 alternatives
What is the best alternative to CHIANTI?
Based on features, tags and platforms, the closest alternatives to CHIANTI are ATOMDB, Madrigal Database, and Handbook of Basic Atomic Spectroscopic Data.
Is there a free alternative to CHIANTI?
Yes. LXcat is free or offer a free plan.
Are there open-source alternatives to CHIANTI?
Yes: vectara/hallucination-leaderboard.
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