ThingsBoard
An IoT platform whose release notes have become a CVE ledger
Comparison · Analytics
ROOT vs Chord
A side-by-side editorial comparison of ROOT and Chord — release velocity, themes, recent moves, and the top alternatives to consider.
ROOT vs Chord: at a glance
| Feature | ROOT | Chord |
|---|---|---|
| Sector | Analytics | Analytics |
| Velocity score | 0.0 | 6.3 |
| Sparks · 30d | 0 | 1 |
| Top themes | hep-analysis, rntuple, rdataframe, lts-branches | cdp, agent-native, audience-building, conversational-analytics |
| Last editorial update | 2h ago | 3d ago |
| Website | Visit → | — |
What is ROOT?
ROOT is shipping the pieces of its long-promised v7 inside the v6 release line
ROOT maintains an unusual number of parallel branches — patches for 6.26, 6.28, 6.30, 6.32, 6.36 and 6.38 all landed within weeks of each other in June 2026 — because CERN experiments pin to versions for years at a time. The 6.40 LTS released in May is where the actual work is: an opt-out from automatic object registration, experimental multithreaded histograms, a new RFile interface, an libcurl-based HTTP I/O layer with S3 support, and a rebuilt ML data loader. June's patch wave is the routine consequence, closing out the 6.26 and 6.38 series while fixing the first regressions in 6.40.
What is Chord?
Chord rebuilt Copilot, renamed it, and let it start building the audiences it used to describe
Chord has spent four months rebuilding its assistant and is now finishing the rename. Copilot Next appeared as a limited preview in late June, then gained persistent chat history, shareable conversations, answers grounded in the customer's own business definitions, and background detection of whether feedback was positive or negative. As of this release the Copilot name is retired in favour of Ask Chord.
ROOT vs Chord: editorial side-by-side
ROOT
0.0ANALYTICS
ROOT is shipping the pieces of its long-promised v7 inside the v6 release line
◆ Current state
ROOT maintains an unusual number of parallel branches — patches for 6.26, 6.28, 6.30, 6.32, 6.36 and 6.38 all landed within weeks of each other in June 2026 — because CERN experiments pin to versions for years at a time. The 6.40 LTS released in May is where the actual work is: an opt-out from automatic object registration, experimental multithreaded histograms, a new RFile interface, an libcurl-based HTTP I/O layer with S3 support, and a rebuilt ML data loader. June's patch wave is the routine consequence, closing out the 6.26 and 6.38 series while fixing the first regressions in 6.40.
◆ Where it's heading
The ROOT 7 redesign is arriving piecemeal under ROOT::Experimental rather than as a version bump: RNTuple replacing TTree, RDataFrame replacing TTree::Draw, RFile replacing TFile, and now the ability to switch off the global-directory ownership model that has defined ROOT's ergonomics for decades. The team is easing migration with documentation rather than deprecation — 6.40 ships a TTree::Draw-to-RDataFrame translation guide instead of a removal notice. Build weight is being cut in the same pass, with bundled builtin packages reduced roughly fourfold in favour of system libraries.
◆ Prediction
Expect further 6.40.x patches through the year as experiments migrate onto the LTS, concentrated in RNTuple and the new histogram paths where the code is youngest. The experimental namespace is the thing to watch: features that stabilize there are the clearest available signal of what a ROOT 7 would actually contain.
Chord
6.3ANALYTICS
Chord rebuilt Copilot, renamed it, and let it start building the audiences it used to describe
◆ Current state
Chord has spent four months rebuilding its assistant and is now finishing the rename. Copilot Next appeared as a limited preview in late June, then gained persistent chat history, shareable conversations, answers grounded in the customer's own business definitions, and background detection of whether feedback was positive or negative. As of this release the Copilot name is retired in favour of Ask Chord.
◆ Where it's heading
The rename is the least interesting part; what changed is what the assistant is allowed to do. Answering questions about data became building audiences from a conversation and naming them, which moves Chord AI out of the reporting layer and into the operational path of the CDP. The grounding in business definitions and the visible sources are the trust scaffolding that had to land first before users would let it write anything.
◆ Prediction
If audience building was the first write action, activation is the obvious next one — pushing an audience to a destination or scheduling it rather than handing it back for a human to send. These entries do not yet show that step, so it stays a read on direction rather than a certainty.
Alternatives to ROOT and Chord
Other Analytics products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either ROOT or Chord.
Apache Drill
A SQL-on-anything engine shipping rarely, but each release widens what it can reach
Apache Superset
Superset's tracked feed is a Helm chart tag stream with no notes attached.
ApexCharts
Three releases in three weeks moved ApexCharts from free library to gated open-core.
Graphite
Graphite's answer to its own CVE backlog is a pre-release nobody calls official.
Cortex
Cortex is betting on Parquet block storage and graduating years of experimental features.
Recent activity from ROOT and Chord
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoChordNaming updates: Copilot is now ‘Ask Chord’
- 12d agoChordChord AI builds and names audiences from a conversation ⚡
- 25d agoChordChord AI answers grounded in your own business definitions
- 1mo agoChordCopilot Next adds persistent history and shareable chats
- 1mo agoChordA first look at Copilot Next
- 1mo agoROOTROOT 6.32.24 patches the 6.32 maintenance branch
- 1mo agoROOTROOT 6.30.12 patches the 6.30 maintenance branch
- 1mo agoROOTROOT 6.28.16 patches the 6.28 maintenance branch
- 1mo agoChordChord AI detects feedback sentiment in your messages
- 1mo agoROOTROOT 6.38.06 closes the 6.38 series, adds Python 3.15 support
- 2mo agoROOTROOT 6.40.02 fixes RNTuple model extension and SOFIE padding
- 2mo agoROOTROOT 6.26.20 is the final patch for the 6.26 series
Frequently asked questions
What is the difference between ROOT and Chord?
They serve adjacent needs but don't currently overlap on shipped themes. Chord is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is ROOT better than Chord?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Chord is currently shipping more aggressively (velocity 6.3 vs 0.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to ROOT?
Top ROOT alternatives in Analytics are ranked by recent ship velocity. Browse the "ROOT alternatives" section above for the current picks, or visit /alternatives/cern-root for the full list with editorial commentary on each.
What are the best alternatives to Chord?
Top Chord alternatives in Analytics are ranked by recent ship velocity. Browse the "Chord alternatives" section above for the current picks, or visit /alternatives/chord for the full list with editorial commentary on each.