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Flow cytometry analysis and reporting in your browser

FCS Express vs. Conspecta

A feature-by-feature comparison.

FCS Express is a desktop tool for flow cytometry analysis and reporting, known for its layout editor, publication-style report templates, and 21 CFR Part 11 compliance options, licensed per seat. It's now part of Dotmatics, the scientific-software suite Siemens acquired in 2025. Conspecta runs gating, compensation, t-SNE, and FlowSOM-style and PhenoGraph-style clustering in any browser, ties every FCS file to the sample it came from, and includes flow cytometry free for you and one collaborator.

How Conspecta compares to FCS Express
CapabilityConspectaFCS Express
Runs onAny browser, any device. Nothing to install.Windows and macOS desktop app.
PriceFlow cytometry is free for you and one collaborator. Academic teams pay a flat per-lab rate.Per-seat license. Free trial, no free tier. Research and compliant editions priced separately.
Gate shapesRectangle, polygon, ellipse, quadrant, range, and boolean.Rectangle, polygon, freehand, ellipse, quadrant, range, and boolean.
Reusing a gating strategyOne strategy applies to every file in the analysis. Save it as a template the whole project shares.A layout re-applies to new data files dropped onto it.
CompensationFrom the file's spillover matrix, a CSV you import, or computed from single-stain controls. No spectral unmixing.From the file's matrix, edited by hand, or computed from single-stain controls.
Dimensionality reductionUMAP, t-SNE, PCA.t-SNE and UMAP.
ClusteringSOM (FlowSOM-style), graph (PhenoGraph-style), K-means, DBSCAN.FlowSOM.
ReadsFCS 3.0, 3.1, and 3.2. Gating from FlowJo 10 .wsp and Gating-ML 2.0.FCS, LMD, CSV, and text.
Export formatsGated populations as FCS 3.1. Gating as .wsp or Gating-ML 2.0. Statistics as Excel or CSV. Plots as PNG or SVG.Gated populations as FCS. Statistics as Excel or CSV. Layouts as PDF or PowerPoint.
Sample metadataEach file links to a sample record with condition, timepoint, and genotype.Keywords read from the file.
Cell cycle and proliferationCell cycle, proliferation, kinetics, QC time-gating, MFI comparison.Cell cycle, proliferation, kinetics.
Regulated-lab featuresSign-offs and version history. 21 CFR Part 11 work is quoted with a Business plan.A separate compliant edition with audit trails and electronic signatures for 21 CFR Part 11 work.
Publication figuresFigure editor for multi-panel figures from live plots and charts.Layout and report editor for multi-plot layouts.
Who can open itEveryone on the project, in the browser, at the same time.One person at a time, by passing the layout file.

How the workflows differ

Why labs look for an FCS Express alternative

FCS Express earns its place on the strength of its report and layout editor, and that's usually not the part labs want to replace. The friction is everything around it. There's a per-seat license to renew, a desktop app to install and update on every machine, and analysis that lives in files handed from one person to the next. For a lab that mostly needs to gate a few panels, compensate, and pull clean statistics, that overhead is the part worth shedding.

The same analysis, on any device

Conspecta moves the everyday flow workflow into the browser. You open an FCS file, draw gates, apply a compensation matrix, and run t-SNE or SOM clustering without installing anything or holding a seat. Because it's a browser tool, the researcher on a Mac, the student on a Chromebook, and the PI reviewing on a laptop all open the same link and see the same analysis.

Flow data that stays connected to the rest of your work

The clearest difference isn't the gating, it's what happens after. FCS Express analyzes the FCS file in front of it and leaves the rest to you. The sample it came from, the timepoint, the genotype, and the figure it ends up in all live in other tools. In Conspecta, a gated population stays attached to the sample it was measured from, so its timepoint, condition, and genotype travel with it, and a figure you build pulls straight from that analysis.

In practice that means less of the manual bookkeeping that causes mistakes. You aren't exporting statistics into a spreadsheet, relabeling wells, and rebuilding a report from a stale export, so there's less chance of a mislabeled condition slipping through. The flow work sits in the same project as the samples, images, and notebook it relates to. FCS Express is only the flow piece of the Dotmatics suite, so the notebook (LabArchives), the figures (Prism), and even a second flow tool (OMIQ) are separate products you license on their own.

What switching actually looks like

Moving over is mostly a one-time step. You upload your FCS files and rebuild your gating strategy once. If any of that gating already exists as a FlowJo 10 workspace or a Gating-ML 2.0 file, the format FlowJo, Cytobank, and the R CytoML packages write, it imports directly instead, and a workspace is checked against your own files population by population before you keep it. From there you save that strategy as a template the whole team gates from, rather than passing a file around. Your results export back out as FCS and Excel or CSV, and the strategy itself as .wsp or Gating-ML, so nothing you do is locked into the tool.

FCS Express vs. Conspecta: the bottom line

Switch to Conspecta if

  • You want to gate, compensate, and cluster (FlowSOM-style SOM, PhenoGraph-style graph, t-SNE) in the browser with nothing to install
  • You want flow cytometry free for you and one collaborator, since FCS Express has no free tier
  • You want every FCS file tied to its sample, timepoint, and genotype
  • You build figures and want them made from the same flow data
  • Your team should share one gating template instead of passing files around

Stay on FCS Express if

  • Your work centers on the FCS Express report layout editor and its publication templates
  • You want the 21 CFR Part 11 features De Novo sells as a separately priced Validation Ready package
  • You unmix spectral data in your analysis software rather than on the instrument, since Conspecta reads unmixed files but cannot unmix raw detector channels itself
  • You need a desktop tool that keeps working with no network connection

FCS Express and all other product names and trademarks on this page belong to their respective owners. Conspecta is not affiliated with, endorsed by, or sponsored by them. This comparison is written by Conspecta, and we have tried to be fair, including where FCS Express does things we do not. Pricing, packaging, and feature details about FCS Express were last checked in July 2026 and may have changed since. Check their site for current details.

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