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E-Signature Software · Rank #8 of 10

Nitro Sign

PDF editor + esignature bundled, an Adobe Acrobat alternative.

By Nitro Software, Inc. (Potentia Capital) · Founded 2005 · San Francisco, CA · private

Nitro Sign is the e-signature module of Nitro PDF Pro, founded 2005 in Melbourne, Australia (HQ since relocated to San Francisco). Nitro went public in 2019 (ASX: NTO), then was taken private by Potentia Capital in 2023 for AUD $532M. The product covers PDF editing + e-signature in one bundled subscription. Strengths: strong fit for organizations standardizing on Nitro as a Adobe Acrobat alternative (Nitro PDF + Sign in one license is materially cheaper than Acrobat Pro + Adobe Acrobat Sign separately), per-user pricing simpler than Adobe's bundled tiers, and mature 20-year track record. Best fit for SMB-mid organizations (50-2,000 employees) wanting Adobe Acrobat alternative bundled with esignature. Trade-offs: post-Potentia (2023) product velocity has been mixed, Support is hit-or-miss, brand recognition lower than DocuSign / Adobe, and feature depth below DocuSign in pure-esignature workflows.

Visit Nitro Sign Vendor pricing Compare to OneSpan Sign
Best for

SMB-mid organizations (50-2,000 employees) wanting an Adobe Acrobat alternative with bundled PDF editing + e-signature in one per-user subscription.

Worst for

Enterprise buyers needing deepest esignature integrations (DocuSign better), Adobe-anchored teams (Acrobat Sign more native), or sales-anchored proposal teams (PandaDoc better).

Vendor Trust Score

Is Nitro Sign a trustworthy vendor?

7.1/10
Mixed
Pricing transparency
Published rates; no hidden fees
7.5
Contract fairness
Reasonable terms; no auto-renew traps
7.5
Incident response
How they handle outages and breaches
7.0
Post-acquisition behavior
Customer treatment after M&A or PE
6.5
Executive stability
Leadership churn over 24 months
7.0
Roadmap honesty
Public commitments held
7.0
Trust signal log
  • 2019-12-13
    Nitro IPO on ASX (Australian Securities Exchange)
  • 2023-06-05
    Taken private by Potentia Capital for AUD $532M
  • 2024-09-22
    Customer reports of post-Potentia product velocity mixed
Vendor Trust is scored independently of product quality. A great product from an unfair vendor still earns a low trust score.
Review Intelligence

What 480 reviews actually say

Synthesized from G2, Capterra, Reddit, Trustpilot. Patterns >15% prevalence shown.

Last synthesized
2026-04-29

Praise patterns

  • PDF editor + esign bundled in one subscription
    84% →
  • Materially cheaper than Acrobat Pro + Sign
    71% →
  • Made for Adobe alternative buyers
    64% →

Complaint patterns

  • Post-Potentia product velocity mixed
    47% ↑
  • Brand recognition lower
    41% →
  • Feature depth below DocuSign for pure esign
    38% →
Sentiment trend (6 months)
75/100 -1 pts
12
01
02
03
04
05
Patterns are extracted from review corpus and human-verified. We surface trends, not anecdotes.
Verified Pricing

What buyers actually pay

187 anonymized deal disclosures · last updated 2026-05-01

Contribute your deal price
Company size Median annual
50-200 employees $2,400
200-2,000 employees $14,400
Verified pricing is crowdsourced from buyers under anonymity guarantees. Vendor-listed prices are validated against actual deals quarterly.
Compliance & Security

Auto-verified certifications

Verified 2026-05-01
SOC 2 Type II
ISO 27001
HIPAA
GDPR
CCPA
PCI DSS
FedRAMP

Editorial: Strengths

  • PDF editor + esignature bundled in one subscription
  • Materially cheaper than Adobe Acrobat Pro + Acrobat Sign
  • Per-user pricing simpler than Adobe's tiered bundles
  • Built for Adobe Acrobat alternative buyers
  • Mature 20-year track record
  • Strong document analytics

Editorial: Weaknesses

  • Post-Potentia product velocity mixed
  • Uneven support quality
  • Brand recognition lower than DocuSign / Adobe
  • Feature depth below DocuSign in pure-esignature workflows
  • Smaller integration ecosystem (~40)

Key features & integrations

  • +PDF editing (Nitro PDF Pro)
  • +E-signature with audit trail
  • +Document workflows
  • +Templates and bulk send
  • +Analytics on document engagement
  • +Microsoft 365 integration
  • +Mobile apps
  • +Volume licensing for enterprise
40+ integrations
Microsoft 365SharePointGoogle DriveSalesforceBox
Geography supported
Global; strongest in US, EU, AU
Best fit
50–2,000 employees · SMB-mid organizations seeking Adobe Acrobat alternative
Editorial deep-dive

Read our full ranking of E-Signature Software

Nitro Sign ranks #8 in our editorial review of 10 e-signature software platforms. The deep-dive covers methodology, comparison tables, decision matrix, migration scoring, and FAQs.

Read the full ranking

Closest alternatives in E-Signature Software

#7
OneSpan Sign
Financial-services-anchored esignature with strongest authentication options.
★ 4.4 opaque
#9
Jotform Sign
Form-anchored esignature, native to Jotform forms.
★ 4.7 public
#6
SignEasy
Founder-led mobile-first esignature for SMBs and field-services teams.
★ 4.7 public
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