VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Sunday, October 5, 2025

View DiffcheckerView USAspendingBack to Home

Head-to-head

Diffchecker vs USAspending comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

Diffchecker adds Diff View coverage that USAspending skips.

USAspending includes Data APIs, Data Visualizations, Videos, and Other categories that Diffchecker omits.

Diffchecker highlights: Supports multi-format comparisons: text, images, PDFs, Excel files, and folders., Desktop apps allow fully offline diffs, ensuring comparisons never leave the user’s computer., and Real-time text diffing, diff merging, dark mode, and export to PDF..

USAspending is known for: Advanced Search & profiles across awards, recipients, agencies, federal accounts; filters include date, place of performance, NAICS/PSC, Assistance Listing (formerly CFDA), DEFC for COVID/infrastructure., Spending Explorer and Agency/Federal Account profiles for top‑down views of obligations/outlays and drill‑downs by budget hierarchy., and Public REST API that powers the website (GET & POST endpoints; JSON responses); tutorial and contracts for commonly used endpoints..

Diffchecker logo

Diffchecker

diffchecker.com

Diffchecker is a comparison tool for text, images, PDFs, Excel files, and folders. The free Basic plan is web-only, while Pro + Desktop adds offline diffs, ad-free usage, real-time text comparison, and desktop apps. Legal and Enterprise tiers include integrations (e.g. iManage) and advanced admin features. Enterprise also offers SAML SSO, SCIM provisioning, and priority support. An API is available with free and paid plans, and a 14-day trial is offered for Pro/Desktop plans.

Platforms

Web
Desktop
API

Pricing

Free
Subscription

Quick highlights

  • Supports multi-format comparisons: text, images, PDFs, Excel files, and folders.
  • Desktop apps allow fully offline diffs, ensuring comparisons never leave the user’s computer.
  • Real-time text diffing, diff merging, dark mode, and export to PDF.
  • Syntax highlighting for 20+ programming languages with character-by-character precision.
  • Public HTTP API supports text, image, PDF, and Excel diffs with tiered monthly quotas and input size limits.

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USAspending logo

USAspending

usaspending.gov

Official U.S. federal spending open‑data portal mandated by the DATA Act and operated by Treasury’s Bureau of the Fiscal Service. The public REST API powers the site (GET/POST endpoints, JSON responses). Data refreshes daily after a nightly pipeline; underlying source systems update on different cadences (e.g., monthly for Files A/B/C via the DATA Act Broker; next‑day for FPDS contracts; FABS within 2 weeks; FSRS subawards by month‑end; GTAS monthly). Bulk downloads and archives are available for awards back to FY2008.

Platforms

Web
API

Pricing

Free

Quick highlights

  • Advanced Search & profiles across awards, recipients, agencies, federal accounts; filters include date, place of performance, NAICS/PSC, Assistance Listing (formerly CFDA), DEFC for COVID/infrastructure.
  • Spending Explorer and Agency/Federal Account profiles for top‑down views of obligations/outlays and drill‑downs by budget hierarchy.
  • Public REST API that powers the website (GET & POST endpoints; JSON responses); tutorial and contracts for commonly used endpoints.
  • Bulk data: Award Data Archive (pre‑generated, by agency/fiscal year), Custom Award Data, Custom Account Data, and full Database Download.
  • Award coverage: contracts, contract IDVs, grants, direct payments, loans, insurance, other financial assistance; prime awards and subawards (FSRS).

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Overlap

Shared focus areas

1 overlap

Both tools cover this research theme.

Where they differ

Diffchecker

Distinct strengths include:

Diff View
  • Supports multi-format comparisons: text, images, PDFs, Excel files, and folders.
  • Desktop apps allow fully offline diffs, ensuring comparisons never leave the user’s computer.
  • Real-time text diffing, diff merging, dark mode, and export to PDF.
  • Syntax highlighting for 20+ programming languages with character-by-character precision.

USAspending

Distinct strengths include:

Data APIs
Data Visualizations
Videos
Other
  • Advanced Search & profiles across awards, recipients, agencies, federal accounts; filters include date, place of performance, NAICS/PSC, Assistance Listing (formerly CFDA), DEFC for COVID/infrastructure.
  • Spending Explorer and Agency/Federal Account profiles for top‑down views of obligations/outlays and drill‑downs by budget hierarchy.
  • Public REST API that powers the website (GET & POST endpoints; JSON responses); tutorial and contracts for commonly used endpoints.
  • Bulk data: Award Data Archive (pre‑generated, by agency/fiscal year), Custom Award Data, Custom Account Data, and full Database Download.

Feature-by-feature breakdown

AttributeDiffcheckerUSAspending
Categories

Which research workflows each platform targets

Shared: APIs & SDKs

Unique: Diff View

Shared: APIs & SDKs

Unique: Data APIs, Data Visualizations, Videos, Other

Asset types

Supported asset classes and universes

Other

Other

Experience levels

Who each product is built for

Beginner, Intermediate, Advanced

Beginner, Intermediate, Advanced

Platforms

Where you can access the product

Web, Desktop, API

Web, API

Pricing

High-level pricing models

Free, Subscription

Free

Key features

Core capabilities called out by each vendor

Unique

  • Supports multi-format comparisons: text, images, PDFs, Excel files, and folders.
  • Desktop apps allow fully offline diffs, ensuring comparisons never leave the user’s computer.
  • Real-time text diffing, diff merging, dark mode, and export to PDF.
  • Syntax highlighting for 20+ programming languages with character-by-character precision.
  • Public HTTP API supports text, image, PDF, and Excel diffs with tiered monthly quotas and input size limits.
  • API authentication uses an email query for the free tier, and API keys for paid plans.

Unique

  • Advanced Search & profiles across awards, recipients, agencies, federal accounts; filters include date, place of performance, NAICS/PSC, Assistance Listing (formerly CFDA), DEFC for COVID/infrastructure.
  • Spending Explorer and Agency/Federal Account profiles for top‑down views of obligations/outlays and drill‑downs by budget hierarchy.
  • Public REST API that powers the website (GET & POST endpoints; JSON responses); tutorial and contracts for commonly used endpoints.
  • Bulk data: Award Data Archive (pre‑generated, by agency/fiscal year), Custom Award Data, Custom Account Data, and full Database Download.
  • Award coverage: contracts, contract IDVs, grants, direct payments, loans, insurance, other financial assistance; prime awards and subawards (FSRS).
  • Entity identifiers: UEI (replaced DUNS on Apr 4, 2022) used for recipients as the governmentwide identifier (via SAM.gov).
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Frequently Asked Questions

Which workflows do Diffchecker and USAspending both support?

Both platforms cover APIs & SDKs workflows, so you can research those use cases in either tool before digging into the feature differences below.

Do Diffchecker and USAspending require subscriptions?

Both Diffchecker and USAspending keep freemium access with optional paid upgrades, so you can trial each platform before committing.

How can you access Diffchecker and USAspending?

Both Diffchecker and USAspending prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.

What unique strengths set the two platforms apart?

Diffchecker differentiates itself with Supports multi-format comparisons: text, images, PDFs, Excel files, and folders., Desktop apps allow fully offline diffs, ensuring comparisons never leave the user’s computer., and Real-time text diffing, diff merging, dark mode, and export to PDF., whereas USAspending stands out for Advanced Search & profiles across awards, recipients, agencies, federal accounts; filters include date, place of performance, NAICS/PSC, Assistance Listing (formerly CFDA), DEFC for COVID/infrastructure., Spending Explorer and Agency/Federal Account profiles for top‑down views of obligations/outlays and drill‑downs by budget hierarchy., and Public REST API that powers the website (GET & POST endpoints; JSON responses); tutorial and contracts for commonly used endpoints..

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Stay on top of related tools

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.