Open-source tools — Spreadsheets

8 match your filters — 8 of them answered our check today.

Watching this group for 20 days · how we check

This week2 new arrivals

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ADA

Live

An open-source data analyst that cleans a CSV or Excel file, builds a dashboard, and shows the exact calculation behind every chart or forecast.

Open source

What to know▼

How it works: Every chart/forecast traces to a readable pandas calculation
What's different: optional AI never sees your row data, only column schema; works with no API key
Pricing: open source, MIT licensed
Best for: anyone who wants an auditable alternative to a black-box data analyst tool

Watched for 6 days · last checked today

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TenTags Studio

Live

An open-source visual table editor with a Python DSL that exports to HTML, PDF, and Excel, for developers automating dashboards and reports without hand-writing layout code.

Open sourceCan export my data

What to know▼

How it works: A live preview grid stays bidirectionally synced with Python code via an AST; design visually or write code and both update.
Best for: Developers automating BI dashboards, KPI cards, Gantt charts, or heatmaps.

Watched for 7 days · last checked 1d ago

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An open-source declarative language for generating documents from one definition, compiling to HTML, PDF and Excel. A developer infrastructure tool for structured documents, not a spreadsheet replacement.

Domain registered 16 days ago

Open source

What to know▼

How it works: An open-source declarative language and intermediate representation for documents that compiles one document definition into HTML, PDF and Excel output, keeping business logic separate from presentation.
What's different: Replaces embedding programming logic into templates with a compact semantic syntax that Python applications and AI agents can generate directly.
Best for: Developers building document-generation pipelines who need one definition to produce multiple output formats.

Watched for 14 days · last checked today

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ShipMore

Live

Turns a CSV into a sellable data product, a directory, API, or feed, with Stripe checkout and SEO pages wired in, and lets coding agents run and fix it on a nightly loop before you approve changes. Self-hosted, MIT licensed, built for developers.

Open sourceSelf-hosted

What to know▼

How it works: Turns a CSV into a sellable data product — a directory, research database, API, or feed — with search, Stripe checkout, and SEO pages already wired in; a nightly agent loop checks traffic and revenue, drafts fixes, and stops for approval before anything goes live.
What's different: Agent-operable end to end via a --json CLI, MCP, and a SKILL.md that coding agents like Claude Code or Codex can read; self-hosted and MIT licensed.
Pricing: One payment; you keep your data and your own Stripe account.
Best for: Developers who want to turn a dataset into a paid product without building the commerce and SEO scaffolding themselves.

Watched for 13 days · last checked 7d ago

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FlashCard

Live

A free, open-source Mac flashcard app modeled on Anki but with zero setup — no account or cloud, cards stay on your Mac, fully keyboard-driven review.

FreeNo sign-upWorks offlineOpen source

What to know▼

How it works: Brings spaced-repetition flashcards to macOS with fully keyboard-driven review (Space to reveal, arrows to grade) and CSV import.
What's different: Zero setup compared to Anki — no account, no cloud, no scheduler to configure; cards stay on your Mac.
Pricing: Free and open source (MIT).
Best for: Mac users who want Anki's spaced-repetition power without its setup complexity.

Watched for 16 days · last checked 10d ago

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StatementSheet

Live

Converts PDF bank statements to Excel/CSV entirely in your browser without uploading them, and checks each one balances to the penny. $19 per batch, not a subscription.

Domain registered 18 days ago

No sign-upWorks offlineData stays with youOpen source

What to know▼

How it works: Converts PDF bank and card statements to Excel/CSV entirely in the browser, without uploading files to a server, and re-verifies each statement against its own running balance to the penny.
What's different: Files never leave the browser (works in airplane mode), and mismatched statements are flagged and made free.
Pricing: $19 per batch, no subscription, no account.
Best for: Anyone converting bank statements to spreadsheets who wants to keep the files off a server.

Watched for 13 days · last checked 11d ago

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BigJSON

Live

A free, open-source desktop app for opening and searching multi-gigabyte JSON files on macOS and Windows in seconds - a free alternative to paid tools like Dadroit.

FreeOpen sourceCan export my data

What to know▼

How it works: Opens and searches multi-gigabyte (2-3 GB) JSON files on macOS and Windows, with a tree viewer, regex search over keys and values, subtree extraction, export to CSV/XML, and multi-file union.
What's different: Free, open-source alternative to paid large-JSON viewers like Dadroit, with no cost or usage limits, including for commercial use.
Pricing: Free.
Best for: Developers who regularly need to open and search very large JSON files.

Watched for 15 days · last checked 2d ago

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Laravel Export Builder

Live

An open-source Laravel package for building Excel, CSV, and PDF exports with filters, permissions, and streaming.

Open sourceCan export my data

What to know▼

How it works: An open-source Laravel package for building Excel, CSV, and PDF exports from a single definition, with filters, relationships, queues, permissions, and high-performance streaming.
Pricing: Open source.

Watched for 8 days · last checked 6d ago

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