Notion Pricing vs egroupware Cost Analysis

更新日: 2026年8月3日調査チームによる検証済み🛡️ Docker サンドボックス検証済み: Ubuntu 24.04 LTS | 2 vCPU | 4GB RAM | Docker v27.0
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アーキテクチャ・意思決定比較表

Notion と egroupware のデータ構造、運用コスト、ライセンスリスクの違いを詳細に分析します。

Notion (Commercial SaaS)
$15 - $50+ / user / mo
⏱️ Zero DevOps Overhead / Managed
☁️ Vendor Cloud Lock-in
VS
egroupware (Self-Hosted)
$0 license ($5/mo VPS)
🛠️ 1-2 hrs / mo Docker DevOps
🛡️ 100% Data Sovereignty
ベンダーロックインのリスクスコアが高いほど、ベンダーロックインによる移行障壁が高くなります
Notion9
egroupware2
移行の複雑さ本番環境のワークフローをオープンソースに移行する難易度
Notion8
egroupware7
運用保守コスト (DevOps Overhead)自己ホスト環境の構築、データベース管理に必要なスキルと時間
Notion1
egroupware6
データ主権と所有権データベースのガバナンスとプライバシーコンプライアンスの管理レベル
Notion2
egroupware10

At 5 users, Notion costs $480 a year and eGroupware’s self-hosted TCO runs closer to $3,100 — Notion wins by a wide margin. Flip to 100 users, and the math inverts: Notion climbs to $9,600 while eGroupware’s largely fixed infrastructure and maintenance costs land around $6,600. That crossover point, not some abstract preference for open source, is what should actually drive this decision.

Notion Official Plans Overview

Notion offers a tiered pricing structure, primarily scaling by user count and feature sets.

Plan Name Price (Monthly Billing) Price (Annual Billing) Billed Key Highlights
Free $0 $0 N/A Unlimited blocks for individuals, 10 guests, 5 MB file uploads, 7-day page history. Limited block usage for teams.
Plus $10/user/month $8/user/month Annually Unlimited blocks for teams, unlimited file uploads, 30-day page history, 100 guests, Admin tools.
Business $18/user/month $15/user/month Annually SAML SSO, private teamspaces, advanced page analytics, 250 guests, 90-day page history.
Enterprise Contact Sales Contact Sales Custom User provisioning (SCIM), advanced security & controls, dedicated success manager, custom contract, unlimited page history, unlimited guests.

(Pricing verified as of 2026-06-24 from Notion’s official website)

Notion’s Potential Hidden Costs

While Notion’s pricing is generally transparent per user, organizations should consider the following indirect or potential “hidden” costs:

  • Integration Development & Maintenance: For complex workflows requiring integrations with systems not natively supported, custom API development or third-party middleware can incur significant engineering time and licensing fees.
  • Data Migration: If moving from an existing robust system, extensive data migration can require professional services, either from Notion (if offered, often at a premium) or external consultants.
  • Advanced Training & Consulting: While Notion is user-friendly, maximizing its advanced features for large teams or complex use cases may necessitate dedicated training sessions or consultation, adding to the operational budget.
  • Feature Creep & Upgrade Pressure: As new features are released, some may become “premium” at higher tiers, potentially forcing an upgrade to access critical functionality for evolving team needs.
  • Vendor Lock-in: The ease of use and deep integration into workflows can create a strong dependency, making future migration to alternative solutions costly and disruptive.

egroupware Total Cost of Ownership (TCO) Analysis

egroupware, as a Free & Open Source (FOSS) alternative, offers significant flexibility and cost control through self-hosting. However, this shifts the cost burden from SaaS subscriptions to infrastructure, maintenance, and internal engineering resources.


Cost Trade-offs at a Glance


Hosting & Server Resource Estimation

The following estimates are for cloud-based Virtual Private Servers (VPS) or similar infrastructure, assuming a standard LAMP/LEMP stack setup. Costs can vary based on provider (AWS, GCP, Azure, DigitalOcean, Linode, Vultr, etc.) and regional pricing.

  • Small Teams (5-20 users):
    • Requirements: 2 vCPU, 4GB RAM, 80-160GB SSD storage.
    • Estimated Annual Hosting Cost: $360 - $720 (e.g., ~$30-$60/month)
  • Medium Teams (20-100 users):
    • Requirements: 4 vCPU, 8GB RAM, 160-320GB SSD storage.
    • Estimated Annual Hosting Cost: $720 - $1,800 (e.g., ~$60-$150/month)
  • Large Teams (100+ users):
    • Requirements: 8+ vCPU, 16GB+ RAM, 320GB+ SSD storage.
    • Estimated Annual Hosting Cost: $1,800 - $4,800+ (e.g., ~$150-$400+/month)

(These estimates do not include potential costs for advanced networking, load balancers, or managed database services, which may be required for very high availability or extreme scale.)

Maintenance & Engineering Support Estimation

The primary cost for egroupware comes from the labor involved in deployment, ongoing maintenance, and support. This typically requires a System Administrator or DevOps Engineer. We’ll use an estimated internal fully loaded cost of $75/hour for a skilled IT professional.

  • Small Teams (5-20 users):
    • Effort: 2-4 hours/month (initial setup, updates, backups, basic troubleshooting).
    • Estimated Annual Maintenance Cost: $1,800 - $3,600 (e.g., ~$150-$300/month)
  • Medium Teams (20-100 users):
    • Effort: 4-8 hours/month (more frequent updates, advanced configuration, monitoring, user support).
    • Estimated Annual Maintenance Cost: $3,600 - $7,200 (e.g., ~$300-$600/month)
  • Large Teams (100+ users):
    • Effort: 8-16 hours/month (dedicated resource for proactive monitoring, performance tuning, security audits, scaling, potentially minor customizations).
    • Estimated Annual Maintenance Cost: $7,200 - $14,400+ (e.g., ~$600-$1,200+/month)

Comparative Total Cost of Ownership (TCO) Table (Annual Estimates)

This table compares Notion’s Plus tier (annual billing) against the estimated mid-range TCO for self-hosting egroupware.

Team Size Notion Annual Cost (Plus Tier) egroupware Annual Hosting (Est.) egroupware Annual Maintenance (Est.) egroupware Total Annual TCO (Est.)
5 users $480 $400 $2,700 $3,100
20 users $1,920 $400 $2,700 $3,100
100 users $9,600 $1,200 $5,400 $6,600

(Note: egroupware hosting and maintenance estimates are relatively fixed for a given “small” or “medium” team size bracket, meaning adding users within that bracket doesn’t linearly increase the TCO until a significant upgrade in infrastructure/maintenance is needed.)

Cost Comparison Scenarios

Let’s examine the annual costs for specific team sizes, using Notion’s Plus tier (annual billing at $8/user/month) and the mid-range egroupware TCO estimates.

  • Scenario 1: 5 Users

    • Notion Cost: 5 users * $8/month * 12 months = $480/year
    • egroupware Cost: ~$3,100/year (Small team hosting + maintenance)
    • Analysis: For a small team of 5, Notion is significantly more cost-effective. The overhead of self-hosting, primarily maintenance labor, makes egroupware a much pricier option.
  • Scenario 2: 20 Users

    • Notion Cost: 20 users * $8/month * 12 months = $1,920/year
    • egroupware Cost: ~$3,100/year (Still within the ‘Small team’ TCO range, slight increase in hosting might be negligible)
    • Analysis: Notion remains the more affordable choice, though the gap narrows slightly compared to the 5-user scenario. The fixed costs of self-hosting are still a higher barrier.
  • Scenario 3: 100 Users

    • Notion Cost: 100 users * $8/month * 12 months = $9,600/year
    • egroupware Cost: ~$6,600/year (Medium team hosting + maintenance)
    • Analysis: For a team of 100 users, egroupware becomes the more economical option. The per-user scaling of Notion’s SaaS model surpasses the relatively fixed (or more gradually scaling) self-hosted TCO.

When Does Paying for Notion Actually Save Money?

Based on the TCO analysis, paying for Notion (or similar SaaS solutions) typically saves money and resources in the following scenarios:

  1. Small Teams (typically under 20-30 users): The fixed overhead of self-hosting infrastructure and dedicated IT/engineering support for egroupware outweighs the per-user cost of Notion.
  2. Organizations Lacking Internal IT/DevOps Resources: Companies without existing IT staff capable of server management, software installation, updates, security patching, and troubleshooting will find the fully managed SaaS experience invaluable, avoiding the need to hire specialized talent or contract external providers.
  3. Prioritizing Immediate Setup & Minimal Configuration: Notion offers an out-of-the-box experience, allowing teams to get started immediately without the lead time for server provisioning, software installation, and initial configuration inherent in self-hosting.
  4. Value of Managed Services & Updates: SaaS ensures automatic updates, security patches, and often 24/7 customer support, eliminating the operational burden and risk associated with self-maintenance.
  5. Focus on Core Business: For many organizations, managing internal IT infrastructure for collaboration tools is a distraction from their core business objectives. Outsourcing this to a SaaS provider allows teams to focus their efforts where they add most value.
  6. Need for Specific Advanced SaaS Features: If a team heavily relies on Notion’s specific integrations, advanced UI/UX, or unique collaboration features that would be complex or impossible to replicate with egroupware.

Final Purchasing Recommendation

Everything above points at one practical rule: below roughly 30-50 users, Notion’s per-seat pricing beats self-hosting almost every time; past that, the math and the IT capability question both start favoring eGroupware.

  • For Small to Medium-Sized Teams (up to ~30-50 users) and those without dedicated IT staff: Notion is generally the recommended choice. Its ease of use, zero infrastructure overhead, immediate availability, and managed updates provide significant value that outweighs its per-user cost. The initial investment in self-hosting (egroupware) for these teams usually results in a higher TCO and diverts valuable resources from core activities.

  • For Medium to Large Enterprises (50+ users) with existing IT infrastructure and personnel, or a strategic imperative for data sovereignty and deep customization: egroupware offers a compelling long-term cost advantage and greater control. While it requires an upfront investment in infrastructure and ongoing maintenance, the per-user cost effectively becomes zero, making it significantly more economical as user counts grow. This option is ideal for organizations that prioritize ownership, customizability, and data residency over the convenience of a fully managed SaaS. Financial planners will appreciate the predictable, non-scaling operational costs, and engineering leads will value the technical control and flexibility.

Ultimately, both financial planners and engineering leads must align on whether the “cost of convenience” (Notion) justifies foregoing the “cost of control and customization” (egroupware). A thorough assessment of internal IT capabilities, future growth projections, and data governance requirements will be crucial in making the optimal decision.


Cost and pricing analysis verified as of 2026-06-24. Self-hosting costs are estimates based on standard cloud providers.

よくある質問

How do the scaling costs for teams compare between Notion's paid tiers and egroupware?

Scaling a team on Notion requires paying $8 to $10 per user/month for the Plus plan, or $15 to $18 per user/month for the Business plan, with the risk of auto-billing for accidental member invitations. Because egroupware is open-source under the GNU General Public License v2.0, you can host its entire PHP-based suite of wikis, calendars, and project management tools on your own infrastructure for unlimited users without per-seat licensing fees. You will, however, need to factor in your own server maintenance and hosting costs for the PHP stack.

What are the hidden cost and performance trade-offs when choosing between Notion and egroupware?

While Notion offers highly customizable relational databases, utilizing its optional AI assistant adds $8 to $10 per user/month, and large databases can suffer from performance and loading lag. Egroupware eliminates these extra add-on costs by bundle-licensing its entire suite—including CRM, knowledge management, and CMS tools—under the GNU General Public License v2.0. This makes egroupware a highly cost-predictable self-hosted alternative, though it lacks Notion's proprietary block-editor flexibility.

機能と価格データは公式ドキュメントと料金ページを出典としており、最終確認日は 2026年6月24日 です。 誤りを見つけましたか?お知らせいただければ修正します。