All of our Excel add-ins are free to use and available in the Microsoft Office Add-in Store. No API keys, no accounts, no setup — just install and go.
ExisEcho
Fuzzy Logic Duplicate Detection for Excel
Find misspelled and similar records in your spreadsheet data using advanced fuzzy matching algorithms — directly inside Excel. ExisEcho uses trigram similarity, Jaro-Winkler, and phonetic matching to identify duplicates that exact-match tools miss entirely.
How It Works
- Select your data — highlight the range containing the records you want to deduplicate
- Choose matching columns — pick which columns to compare (e.g., Name, Address, Company)
- Configure options — set similarity threshold, enable phonetic matching, synonym expansion, and more
- Review results — matched pairs are displayed with similarity scores. Write results to your sheet, highlight source rows, or export to a new sheet
Key Features
- Fuzzy matching with configurable similarity threshold (0–100%)
- Phonetic matching — catches "Smith" vs. "Smyth", "Jon" vs. "John"
- Synonym expansion — "Robert" matches "Bob", "Corp" matches "Corporation"
- Address abbreviation normalization — "St" matches "Street", "Ave" matches "Avenue"
- Per-column weights, case sensitivity, word order control, and more
- Highlight matched rows in the source sheet for easy review
- Write results inline or to a new sheet
Free Tier Limits
The Excel add-in is free and supports up to 50 records and 2 matching columns per run. Need more? Purchase an API key to unlock higher limits through the ExisEcho REST API, or download the desktop application for unlimited processing.
Screenshots and demo video coming soon
US Geocoder
Free US Address Geocoding for Excel
Convert US street addresses into latitude/longitude coordinates, match quality scores, and census geography data — all without leaving Excel. Powered by the US Census Bureau geocoding service.
How It Works
- Select your addresses — highlight the column or range containing US street addresses
- Run geocoding — addresses are processed sequentially with real-time progress
- Get results — latitude, longitude, match quality, county FIPS, state FIPS, and census tract data are written alongside your addresses
Key Features
- Geocode US addresses to latitude/longitude coordinates
- Match quality indicator (Exact, Non-Exact, Tie, No Match)
- Census geography: county FIPS, state FIPS, census tract
- Real-time progress display as addresses are processed
- No API key required — completely free
- Powered by the US Census Bureau geocoding service
Screenshots and demo video coming soon
USPS Address Validator
Free USPS Address Validation & Standardization for Excel
Validate, standardize, and parse US addresses against the official USPS database directly inside Excel. Ensure your mailing lists are deliverable and properly formatted.
How It Works
- Select your addresses — highlight the cells containing US addresses
- Run validation — each address is checked against the USPS database
- Review results — standardized addresses, parsed components, and validation status are returned
Key Features
- Validate addresses against the official USPS database
- Standardize formatting to USPS conventions
- Parse addresses into components (street, city, state, ZIP)
- Identify corrected, invalid, and undeliverable addresses
- No API key required — completely free
Screenshots and demo video coming soon
ZIP Code Lookup
Free Offline ZIP Code Enrichment for Excel
Enrich ZIP codes with city, state, county, timezone, area codes, coordinates, and population data. Processes 43,000+ US ZIP codes entirely on your machine — no internet connection required.
How It Works
- Select your ZIP codes — highlight the column containing US ZIP codes
- Choose output fields — pick which data you want (city, state, county, timezone, etc.)
- Get results — enrichment data is written alongside your ZIP codes instantly
Key Features
- Lookup city, state, county, timezone, area codes, and coordinates
- Population and demographic data for each ZIP code
- 43,000+ US ZIP codes included
- Works completely offline — no internet required
- Instant processing — no API calls, no waiting
- No API key required — completely free
Screenshots and demo video coming soon
Need More Power?
Our Excel add-ins are great for quick tasks. For large-scale deduplication, use the ExisEcho desktop application or REST API.
Download ExisEcho Explore the API