Sign.Plus
Sign.Plus is a cloud-based electronic signature platform operated by Swiss-based Alohi, providing legally binding signatures compliant with ESIGN, eIDAS, and ZertES regulations across web, iOS, Android, and API surfaces. It serves individuals, SMBs, and enterprises — including healthcare, legal, financial services, and large organizations — through a self-serve and enterprise sales motion.
- Company typePrivate
- Founded2016
- HeadquartersPlan-les-ouates, Switzerland
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Sign.Plus does
Sign.Plus, operated by Alohi and headquartered in Plan-les-Ouates, Switzerland, is a cloud-based electronic signature platform that issues legally binding signatures compliant with ESIGN (US), eIDAS (EU), and ZertES (Switzerland) regulations. The platform supports three signature tiers — Simple (SES), Advanced (AES), and Qualified (QES) — with QES certificates delivered through a direct partnership with Swisscom Trust Services, a Qualified Trust Service Provider. Sign.Plus is accessible via a web application, native iOS and Android apps, and a RESTful eSignature API with backend SDKs in Python, TypeScript, Go, Java, C#, and PHP; it additionally offers an MCP server and a free developer sandbox for embedded integrations.
The underlying architecture emphasizes regulatory and security depth: 256-bit AES encryption at rest with per-user keys, TLS 1.3+ in transit, tamper-proof audit trails, two-factor authentication, and completion certificates. The platform carries ISO 27001, SOC 2 Type 2, HIPAA, PCI DSS, GDPR, CCPA, ESIGN, eIDAS, and ZertES certifications, and supports enterprise features including SSO, team management, role-based access, bulk send, reusable templates, customizable workflows, and data residency. Native integrations with Google Workspace, Microsoft (Word, Teams, Office 365), and Zapier extend the workflow surface into the dominant productivity and automation ecosystems.
The business model is subscription-based across three tiers — Personal ($9.99/month), Enterprise ($49.99/month), and quote-based Custom Solutions typically structured as multi-year contracts — complemented by API usage/subscription for developers. Go-to-market combines a self-serve product-led growth motion (free tier signup, mobile apps, marketplace listings, online signature generator, contract templates) with an enterprise field-sales overlay supported by "Schedule a Demo" and "Contact Sales" CTAs. The customer base is dual-sided: a long tail of individuals and SMBs signing up via PLG, alongside an enterprise tier featuring United Nations, PwC, IBM, Airbus, FIFA, Roche, Philips, 3M, Cloudflare, Canva, ESET, Politico, and Harvard as cited users. Sign.Plus is one of four products under the Alohi umbrella, alongside Dial.Plus (AI phone solution), Fax.Plus (online faxing), and Scan.Plus (mobile scanner).
Sign.Plus firmographics
Firmographics- Name
- Sign.Plus
- Legal name
- Alohi
- Website
- https://sign.plus
- Company type
- Private
- Founded year
- 2016
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Sign.Plus is a cloud-based electronic signature platform operated by Swiss-based Alohi, providing legally binding signatures compliant with ESIGN, eIDAS, and ZertES regulations across web, iOS, Android, and API surfaces. It serves individuals, SMBs, and enterprises — including healthcare, legal, financial services, and large organizations — through a self-serve and enterprise sales motion.
- Ownership category
- akta.pro rank
Sign.Plus industry classification
Industry- Product category
- Electronic Signature Software
- NAICS
- Custom Computer Programming Services (541511), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (51821)
- SIC
- Services-Computer Programming, Data Processing, Etc. (7370)
- akta.pro primary industry
- E-Signature & Digital Transaction Management (DTM) (HDAEAGAF)
Keywords
Where Sign.Plus is headquartered
LocationHeadquarters
- HQ city
- Plan-les-ouates
- HQ country
- Switzerland
- HQ region
- Europe
Offices1 record
Markets served
Sign.Plus business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations
Revenue model
- Subscription - Personal Tier: Subscription-based pricing for individuals and sole proprietors with basic eSignature needs. Priced at $9.99 offering essential eSignature functionality for personal use cases.
- Subscription - Enterprise Tier: Subscription-based pricing for high-volume organizations with advanced eSignature needs including team management, SSO, HIPAA compliance, data residency, and advanced security controls. Priced at $49.99 for enterprise users.
- Custom Solutions: Tailored pricing plans designed to meet specific enterprise needs. Accessed via sales consultation with personalized quoting based on requirements and volume.
- eSignature API: API usage-based or subscription pricing for developers and businesses integrating eSignatures into their platforms via the Sign.Plus API.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Personal tier for individuals and sole proprietors with basic eSignature needs |
| Subscription | Monthly | Enterprise tier for high-volume organizations with advanced solutions |
| Subscription | Multi-year contract | Custom enterprise solution with personalized plan design |
Go-to-market motion3 records
Distribution channels9 records
Marketing channels8 records
Sign.Plus product offering
Product offeringCore offering
Sign.Plus is a cloud-based electronic signature SaaS that lets users sign, send, track, and manage legally binding documents across web, iOS, and Android clients. The platform offers three signature tiers — Simple, Advanced, and Qualified Electronic Signatures (SES/AES/QES) — and is compliant with ESIGN (US), eIDAS (EU), and ZertES (Switzerland). It targets individuals, SMBs, and large enterprises, with an API and SDKs for developer/embedded integration into CRM, HR, and custom workflows.
Product overview
Sign.Plus is a cloud-based electronic signature platform operated by Alohi. The product suite includes Sign.Plus as the core eSignature offering, complemented by Dial.Plus (AI phone solution), Fax.Plus (online faxing), and Scan.Plus (mobile scanner) — all under the Alohi unified business communications platform. Sign.Plus itself provides a comprehensive eSignature solution supporting SES, AES, and QES signature levels with compliance to ESIGN, eIDAS, ZertES regulations, available via web app, mobile apps (iOS/Android), and API integration. The platform also offers a free online signature generator tool as a consumer-facing feature.
Differentiator
Problem solved
Functional benefit
Brands
- Dial.Plus: AI Phone Solution
- Fax.Plus
- Scan.Plus
Products and services
- Sign.Plus
Quantifiable outcome
- Electronic signatures carry same legal weight as handwritten signatures under ESIGN, eIDAS, and ZertES regulations
- +1 more outcomes
Companies that use Sign.Plus
Customer profileNamed customers13 records
Segments9 records
Ideal customer profiles5 records
Sign.Plus technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration4 records
Feature12 records
Sign.Plus partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core.
- Swisscom Trust ServicescoreSign.Plus partners with Swisscom Trust Services, a recognized Certification Service Provider (CSP) and Qualified Trust Service Provider (QTSP), to issue Qualified Electronic Signature (QES) certificates. Users choosing QES are redirected to Swisscom's page for identity verification before signing. This partnership enables compliance with both eIDAS (EU) and ZertES (Switzerland) regulations for qualified electronic signatures.
- GooglecoreNative integration enabling users to sign directly from Google Docs and other Google Workspace applications. Sign documents without leaving Google's ecosystem, streamlining workflow for users already in the Google environment.
- MicrosoftcoreNative integration allowing users to integrate signing into Microsoft tools and workflows. Enables enterprise customers using Microsoft ecosystem to incorporate eSignatures seamlessly into their existing processes.
- ZapiercoreZapier integration enables automation of signature processes and connection to 5,000+ applications. Users can create automated workflows connecting Sign.Plus with their existing business tools for seamless document signing automation.
- Innosuisse - Swiss Innovation AgencycoreSign.Plus is built with support from Innosuisse (Swiss Innovation Agency), the Swiss Confederation's innovation agency. This support validates the company's Swiss origin and innovation quality, reinforcing its positioning for ZertES compliance and European market presence.
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
Sign.Plus competitors and assessment
Company assessmentEmerging players
- Box Sign: Native eSignature capability within the Box content management platform. Comparable on integrated ECM + signing narrative and enterprise security posture.
- BoldSign: Developer-friendly eSignature API with .NET/JS SDKs and similar APAC/EMEA distribution. Comparable on API-first GTM targeting embedding partners.
Direct peers
- DocuSign: Global market-leading eSignature platform offering SES, AES, and limited QES via DocuSign Identity (formerly DocuSign Trust Service Provider). Direct head-to-head competitor across SMB, mid-market, and enterprise, with overlapping regulatory certifications (ESIGN, eIDAS).
- Zoho Sign: Part of Zoho's bundled productivity suite targeting SMBs and existing Zoho customers. Competes on price and ecosystem bundling similar to Alohi's multi-product strategy.
- PandaDoc: SMB-focused eSignature and document workflow platform with templates, workflows, and API. Competes in the same self-serve SMB segment and overlaps on enterprise plans.
- SignNow (by airSlate): Mid-market eSignature platform with API, mobile, and integrations into CRM/workflow tools. Direct competitor in the affordable enterprise signing tier.
- Dropbox Sign (formerly HelloSign): Developer-friendly eSignature API with strong self-serve and PLG motion. Direct competitor in API-first GTM targeting developers and platforms that want to embed signing into their workflows.
- OneSpan Sign (formerly eSignLive): Enterprise eSignature platform with strong regulatory focus including eIDAS, 21 CFR Part 11, and qualified electronic signatures. Most comparable peer on the regulated/qualified signature axis.
Broad incumbents
- Adobe Acrobat Sign: Enterprise eSignature solution bundled within Adobe's broader document and creative platform. Competes for the same SMB and enterprise deals with deep integrations into PDF and Microsoft workflows.
Regional players
- YouSign (France) /Universign: European-focused qualified electronic signature provider (QTSP) under eIDAS. Comparable on European/QES regulatory positioning that Sign.Plus targets via its Swisscom partnership.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Sign.Plus social profiles
Digital presenceSign.Plus compliance and trust
Trust signalCompliance9 records
Sign.Plus financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sign.Plus leadership team
Management profileNumber of profiles
Profiles1 record
Sign.Plus funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sign.Plus M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sign.Plus
What does Sign.Plus do?
Sign.Plus is a cloud-based electronic signature SaaS that lets users sign, send, track, and manage legally binding documents across web, iOS, and Android clients. The platform offers three signature tiers — Simple, Advanced, and Qualified Electronic Signatures (SES/AES/QES) — and is compliant with ESIGN (US), eIDAS (EU), and ZertES (Switzerland). It targets individuals, SMBs, and large enterprises, with an API and SDKs for developer/embedded integration into CRM, HR, and custom workflows.
Is Sign.Plus a public or private company?
Sign.Plus is a private company. It is classified as unknown and is currently operating.
When was Sign.Plus founded?
Sign.Plus was founded in 2016. It employs 11 to 50 people.
Where is Sign.Plus based?
Sign.Plus is headquartered in Plan-les-ouates, Switzerland, in the Europe region.
How does Sign.Plus make money?
Four revenue lines are on record. Subscription - Personal Tier is the primary driver. The others are subscription - Enterprise Tier, custom Solutions and eSignature API.
Who are Sign.Plus's main competitors?
Emerging players on record are Box Sign and BoldSign. Direct peers are DocuSign, Zoho Sign, PandaDoc, SignNow (by airSlate), Dropbox Sign (formerly HelloSign) and OneSpan Sign (formerly eSignLive). Adobe Acrobat Sign is listed as a broad incumbent. YouSign (France) /Universign is listed as a regional player.
Does Sign.Plus have an API?
Yes. Sign.Plus API allows developers to integrate electronic signatures into their applications. The API supports programmatic envelope creation, document management, signature annotations, recipient management, webhooks for real-time notifications, and template handling. Supports backend SDKs in Python, Typescript, Go, Java, C#, and PHP. An MCP server is also available for integration. Developer documentation is at apidoc.sign.plus.
What industry is Sign.Plus in?
Sign.Plus's product category is Electronic Signature Software. Its primary akta.pro industry code is HDAEAGAF, E-Signature & Digital Transaction Management (DTM). Its NAICS code is 541511 and its SIC code is 7370.