Brown Bear Software

What Brown Bear Software does

Brown Bear Software is a privately-held, independent software company founded in 1994 and operated from Anchorage, Alaska (with a Massachusetts-area phone line for contact). It develops and hosts two primary web-based products on its own servers: Calcium Web Calendars, an interactive, customizable shared-calendar platform available in a single-calendar Basic edition and a multi-calendar Enterprise edition with user logins, calendar groups, optional LDAP authentication, and multi-language support; and IOBee In/Out Board, a lightweight online status board for teams. Both products are accessible from any browser without installation and support iCalendar-based subscription into Google Calendar, Apple Calendar, and Microsoft Outlook, with import/export in iCalendar and CSV formats and custom CSS styling for appearance control.

The business operates a primarily self-serve, product-led go-to-market model. Both products offer a free tier requiring no signup — the free tier is monetized via Google AdSense advertising — alongside paid ad-free and Enterprise subscriptions billed through Stripe. The Enterprise tier is priced at $2/month per calendar in blocks of 5, supporting 5 to 100 calendars with discounts and white-label options available on inquiry. The company also offers custom programming services for bespoke modifications, accessed through direct email/phone contact. Customer base is described by the company as "thousands of organizations" spanning corporations, universities, schools, churches, clubs, and research labs worldwide, with no named enterprise logos or case studies. Distribution is entirely direct via brownbearsw.com; no resellers, marketplaces, or third-party channels are used, and the company maintains three legacy desktop/CGI products (Adr_Book, Calcium CGI, iCal) that are no longer actively supported. Headcount is 1–10 employees, the company is bootstrapped with no disclosed funding rounds, and an API with key-based authentication has been exposed within the Calendar Administration interface to enable programmatic access.

Name

Brown Bear Software

Legal name

Brown Bear Software

Website

https://brownbearsw.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

1–10 employees

Short description

Brown Bear Software is a privately-held, bootstrapped developer of web-based scheduling tools — primarily Calcium Web Calendars and IOBee In/Out Board — hosted on its own servers and offered on a freemium self-serve model to thousands of organizations and individuals worldwide.

Ownership category

akta.pro rank

Headquarters

HQ city

Anchorage

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales

Revenue model

1. IOBee Ad-Free Subscription: IOBee In/Out Board is free with advertising displayed. A small annual fee removes ads and unlocks additional features. Revenue is generated from ad-free upgrades on a recurring annual subscription basis.
2. Calcium Ad-Free Basic: Single-calendar basic edition free with advertising; $50/year removes ads and enables use without ads.
3. Calcium Enterprise Calendar Hosting: Enterprise multi-calendar system at $2/month per calendar in blocks of 5 (5-100 calendars). Paid calendars are ad-free, work in HTML iframes, and receive priority email support. This is a recurring subscription revenue model.
4. Advertising Revenue: Free versions of both IOBee and Calcium Basic display advertising. Revenue is generated through ad display on the free tier.
5. Custom Programming Services: Custom software development services are offered for organizations needing bespoke features or modifications to existing products. Revenue is generated through professional services engagements, likely one-time project fees.

Pricing tiers

Go-to-market motion3 records

Distribution channels2 records

Marketing channels5 records

Core offering

Brown Bear Software develops and hosts interactive web-based calendar software (Calcium) and an online in/out status board (IOBee), delivered as SaaS products directly from its own web servers. Both are accessible from any browser on any device, offered with a free ad-supported tier and paid ad-free/enterprise tiers, supplemented by custom programming services for organizations with bespoke needs.

Product overview

Brown Bear Software offers a focused portfolio of web-based productivity tools. The primary offerings are Calcium Web Calendars (available in Basic and Enterprise editions) and IOBee In/Out Board, both hosted on Brown Bear Software's web servers and accessible from any device. Calcium provides interactive calendar management with event scheduling, resource reservations, and team coordination capabilities, with the Enterprise Edition offering multi-calendar support, user groups, and optional LDAP authentication. IOBee provides simple in/out tracking for teams. The company also maintains legacy software including Adr_Book (Windows address book), Calcium CGI (older web calendar server), and iCal (Windows calendar server), which are no longer actively supported.

Differentiator

Problem solved

Functional benefit

Brands

• Calcium Web Calendars: Interactive, customizable web calendar software - free with optional ad-free paid version.
• IOBee

Quantifiable outcome

• Free tier requires no signup or personal information to get started
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature7 records

Scale indicators3 records

Recent moves6 records

Expansion highlights3 records

Emerging players

• When2Meet: Free group availability polling tool widely used by universities and student groups. Overlaps with Calcium's class/meeting scheduling use case at the consumer/academic edge of the market.
• OfficeSpace Software: Workplace management platform with desk booking, room reservations, and employee status tracking. Adjacent to both IOBee's in/out board use case and Calcium's resource scheduling capabilities.

Direct peers

• Teamup Calendar: Shared web-based calendar service for organizations with multiple users, sub-calendars, and access controls. Closely matches Calcium Enterprise's multi-calendar, multi-user feature set and customer segment.
• Doodle: Group scheduling and polling platform with freemium and paid tiers. Direct overlap with Calcium's meeting/class scheduling use cases and similar horizontal, self-serve go-to-market approach.
• Acuity Scheduling: Self-serve appointment scheduling SaaS (now part of Squarespace) with subscription tiers. Comparable freemium-to-paid PLG motion and SMB customer focus to Brown Bear Software's calendar products.
• Robin: Workplace scheduling and in/out tracking platform for hybrid offices, with room booking and desk management. Directly comparable to IOBee's in/out tracking and Calcium's resource reservation use cases in workplace settings.
• Calendly: Scheduling automation SaaS for meetings and appointments with self-serve signup and freemium tiers. Comparable PLG motion, freemium monetization, and SMB/mid-market customer base to Brown Bear Software.
• YouCanBookMe: Booking and scheduling SaaS with self-serve signup, subscription tiers, and website embed functionality. Comparable freemium/PLG model and iframe-embedding capability to Calcium's Enterprise tier.

Broad incumbents

• Microsoft Outlook Calendar: Calendar component of Microsoft 365, bundled with Outlook and Exchange. Targets enterprise scheduling at scale with deep integration into the Microsoft productivity stack, overlapping with Calcium Enterprise's LDAP and group-calendar use cases.
• Google Calendar: Google's free calendar product, deeply integrated with Gmail, Android, and Workspace. It competes with Calcium on web-based scheduling and offers free iCalendar interoperability, making it the dominant incumbent Brown Bear Software contends with.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/BrownBearSW

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Brown Bear Software