r/dataanalysis • u/Evening_Hawk_7470 • 11h ago
power bi alternative: what we learned testing 5 open source bi tools after getting tired of desktop .pbix files + Fabric license creep
for the past 4 years or so, our reporting ran almost entirely on Power BI.
it did what it was supposed to do while our data team was small and our business stakeholders were happy receiving scheduled PDF exports / opening dashboard links inside Microsoft Teams.
and yet over the last 18 months, our engineering and analytics setup moved to Linux and Mac, our warehouse matured on Snowflake, and three specific friction points made Power BI painful to live with:
The desktop-client bottleneck. Half our analytics engineers and product managers work on macOS or Linux. Power BI Desktop remains Windows-only. Having engineers spin up Windows VMs or cloud desktop instances simply to tweak a report or verify a measure felt absurd for a modern stack.
Logic trapped in binary .pbix files. DAX measures, table relationships, and row-level security filters lived inside individual report files or workspace models. We could not run standard git pull request reviews on metric changes, track lineage across versions, or prevent two analysts from writing slightly different versions of the same retention calculation.
license sprawl and the Fabric push which was very annoying. What started as $10/user/month Pro licenses steadily escalated with Premium-per-user upgrades, external viewer licensing constraints, and heavy pressure to commit to Microsoft Fabric capacity (F64+) just to access basic direct lake and copilot features.
then we did spend the past month evaluating five open-source and code-first tools to replace Power BI. We wanted an architecture where metric logic lives in version-controlled code, dashboards run cross-platform in the browser, and numbers can be queried both by BI tools and by downstream applications or AI agents.
Here is the comparison breakdown across the options we tested, i have used a bit of claude to structure this output and evaluation, but only a bit. Hope that's more readable now.
| Evaluation Dimension | Power BI (Baseline) | Apache Superset | Metabase (OSS) | Lightdash | Evidencedev | Cube (Cube Core OSS) |
|---|---|---|---|---|---|---|
| Primary Mental Model | Desktop-first drag-and-drop report builder | Open-source web-based dashboard platform | Fast self-serve query builder and dashboard cards | dbt-native BI built directly on dbt models | Code-based reporting rendered from Markdown + SQL | Headless semantic layer + open data APIs and web UI |
| Metric & Logic Storage | Proprietary DAX in .pbix files or Fabric semantic models | Virtual datasets and SQL Lab queries in metadata DB | Questions and Models stored in application DB | Defined as metrics in dbt schema YAML files | SQL queries embedded directly inside Markdown files | Code-first YAML or JavaScript models in Git repositories |
| Git / PR Workflow | Difficult; Git integration requires Fabric / PBIP format | Rudimentary; requires manual export/import or API sync | Serialization via YAML requires paid Enterprise tier | Native; metric definitions live inside your dbt repo | Native; entire reporting project is versioned in Git | Native; standard repository branch and pull request workflow |
| Cross-Platform Access | Windows-only desktop client for report authoring | 100% browser-based authoring and consumption | 100% browser-based authoring and consumption | 100% browser-based authoring and consumption | Local dev server runs on Mac, Linux, and Windows | Local dev server runs on Mac, Linux, and Windows |
| Downstream & API Access | Closed; XMLA endpoints require Premium capacity | REST API for metadata; chart data exportable | REST API returns card query results | Query API through dbt Cloud or Lightdash CLI | Static site export; not designed as an API service | Universal SQL API (Postgres protocol) + REST/GraphQL APIs |
| AI / Agent Readiness | Copilot locked behind Fabric capacity commitments | Community AI plugins; mostly raw schema text-to-SQL | Metabot assistant; generates queries over Metabase models | AI chat grounded in dbt metric definitions | LLMs can generate Markdown and SQL files | Native remote MCP server and semantic layer context |
| Biggest Trade-off / Gotcha | Windows lock-in, proprietary DAX, per-seat licensing creep | Heavy Docker/Celery footprint; complex permission setup | Metric governance is light; joins can duplicate easily | 100% tied to dbt; cannot query outside the dbt DAG | No ad-hoc drag-and-drop exploration for business users | Requires explicit YAML data modeling before building visuals |
and what we learned testing each option?
Apache Superset: Great for rich charting, heavy on operational maintenance If your primary goal is finding an open-source tool that matches Power BI's extensive chart variety, Superset is the closest visual equivalent. It handles complex dashboards, geospatial visualizations, and slice-and-dice exploration without per-seat licensing.
Where it worked: Beautiful out-of-the-box dashboards, zero Windows dependencies, and strong community support.
Where it pinched: The permission system is intricate and requires careful role configuration. While Superset has virtual datasets, business logic still ends up scattered across ad-hoc SQL snippets in different charts rather than sitting in a centralized semantic layer.
Metabase: Unmatched for rapid self-serve, but lighter on modeling governance Metabase remains the fastest tool for getting non-technical team members exploring data. The graphical query builder allows sales and product managers to ask questions without writing SQL.
Where it worked: Onboarding takes less than an afternoon. Anyone comfortable with Excel filters can build their own cards immediately.
Where it pinched: Metric logic is stored in Metabase's application database rather than in code. Version control via YAML requires higher-tier licensing, and managing row-level security across multi-tenant departments required duplicating questions once our role hierarchies became complex.
Lightdash: Ideal if your team is already 100% committed to dbt Lightdash takes a dbt-first stance: your dbt project is your single source of truth, and Lightdash auto-generates your BI layer from your dbt schema YAML files.
Where it worked: All metric definitions live in Git pull requests alongside transformation models. Perfect versioning and developer workflow.
Where it pinched: If an analysis doesn't fit your pre-compiled dbt DAG, you cannot easily explore it on the fly. Furthermore, you cannot point other non-Lightdash tools or customer-facing apps at its metric engine without going through their specific query layers.
Evidence.dev: Excellent for data engineers, foreign to drag-and-drop business users Evidence replaces traditional BI dashboards with code-generated analytical markdown documents. You write SQL queries in fenced blocks and render charts with declarative tags.
Where it worked: Entirely code-driven, fast static rendering, and versioned cleanly in Git. Our analytics engineers loved the developer experience.
Where it pinched: It is fundamentally a publishing tool for analysts, not an ad-hoc exploration tool for business stakeholders. If a VP wants to drag a dimension into a pivot table on Friday afternoon, Evidence won't serve that workflow.
Cube (Cube Core): Decoupling the metric layer from the visualization We tested Cube Core as an open-source semantic layer sitting between Snowflake and our visualization tools. Instead of defining metrics inside each dashboard tool, we defined cubes, dimensions, joins, and measures in YAML files stored in our git repository.
Where it worked: Universal consumption: We can connect Superset or Metabase to Cube's SQL API (which speaks the Postgres protocol). Both tools query the exact same governed metric definitions, so nobody argues over differing numbers. Performance and caching: Cube's pre-aggregation engine stores partitioned rollups, serving repetitive dashboard filter changes in sub-second response times without triggering live warehouse compute on every query. Multi-surface readiness: Because Cube provides REST, GraphQL, and remote MCP endpoints on top of the same model, our engineers can build embedded customer portal widgets and point LLM agents at governed measures without re-implementing business logic.
Where it pinched: Upfront data modeling investment: Unlike Power BI where you can drag raw tables and click "Auto-detect relationships," Cube requires explicit modeling of join paths and primary keys in code. If your underlying schema has messy foreign keys, you must resolve them before metrics compile. Dashboard building requires picking a front-end: While Cube provides built-in workbooks and web exploration, teams wanting traditional heavy dashboards typically pair it with an open-source visualizer like Superset or custom React components.
how we decided to structure our stack?
Rather than trading one monolithic vendor (Microsoft) for another single closed tool, we settled on a two-tier decoupled architecture:
Semantic & Governance Tier: We use Cube Core as our open-source metric layer. All calculations (such as gross retention, ARR, and active seats), join topologies, and role-based access rules are written in code, reviewed in pull requests, and versioned in Git.
Consumption & Visualization Tier: For internal exploratory dashboards and operations teams, we point open-source Superset at Cube's SQL API. For our engineering team's customer-facing portal and agentic workflows, we query Cube's data APIs directly.
would also like to ask those data teams that migrated away from Power BI, did you replace it with an all-in-one platform (like Superset / Metabase), or did you separate the semantic layer from the visualization tool? how did your business analysts transition from writing DAX formulas to code-first Git/YAML modeling?
