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Data Sparrow
Local by default

Complete catalog

Tools for the whole table workflow

Every entry opens the same reversible dataset workspace with a task-specific preset. Readiness labels reflect tested functionality.

20 tools

view preview

Data Viewer

Inspect rows, columns, parsing details, and schema.

Local + API csv · tsv · json · ndjson
view planned

Data Profiler

Measure types, blanks, distinct values, ranges, distributions, and invalids.

Local + API csv · tsv · json · ndjson
clean preview

Data Cleaner

Normalize whitespace, blanks, Unicode, case, and empty rows or columns.

Local + API csv · tsv · json · ndjson
clean preview

Duplicate Finder

Find exact or key duplicates and review fuzzy candidates safely.

Local + API csv · tsv · json · ndjson
clean planned

Find & Replace / Mapping

Replace literal or patterned values and apply mapping tables.

Local + API csv · tsv · json · ndjson
transform planned

Column Manager

Select, rename, reorder, remove, split, merge, derive, and cast columns.

Local + API csv · tsv · json · ndjson
transform planned

Sort, Filter & Sample

Build a reproducible filtered, sorted, or sampled view.

Local + API csv · tsv · json · ndjson
transform planned

Group, Aggregate & Pivot

Create grouped summaries, pivots, unpivots, and transposes.

Local + API csv · tsv · json · ndjson
combine planned

Append Tables

Union compatible tables with an explicit schema mapping.

Local + API csv · tsv · json · ndjson
combine planned

Join Tables

Join datasets with cardinality checks and row-expansion warnings.

Local + API csv · tsv · json · ndjson
compare planned

Dataset Comparator

Classify added, removed, changed, unchanged, and ambiguous rows.

Local + API csv · tsv · json · ndjson
transform planned

Split Data

Split results by row count, byte target, or column value.

Local + API csv · tsv · json · ndjson
validate planned

Schema Validator

Check required, type, range, pattern, uniqueness, and cross-field rules.

Local + API csv · tsv · json · ndjson
privacy planned

Mask & Pseudonymize

Mask, hash, or deterministically replace selected fields.

Local + API csv · tsv · json · ndjson
convert preview

Delimited Converter

Convert CSV, TSV, semicolon, and pipe-delimited files safely.

Local + API csv · tsv
convert planned

Spreadsheet Converter

Import spreadsheet values and export XLSX, CSV, or Parquet.

API with consent xls · xlsx · xlsb · ods
convert planned

JSON / NDJSON Converter

Convert table-shaped JSON records to or from delimited data.

Local + API json · ndjson · csv · tsv
convert planned

Parquet Converter

Inspect and convert Parquet while disclosing schema mappings.

API with consent parquet · csv · tsv · json
convert planned

SQLite Extractor

Export tables or a restricted read-only SELECT from SQLite.

API with consent sqlite · sqlite3 · db
automate planned

Recipe Runner

Save, validate, migrate, share, and batch-run operation recipes.

Local + API csv · tsv · json · ndjson