AspenTech InfoPlus.21 costs $25/mo.
These cost $0.
2 free alternatives to AspenTech InfoPlus.21, checked for license, recent activity and real adoption. Each one tells you the catch, so you can switch with your eyes open.
The top-rated free, open-source replacement for AspenTech InfoPlus.21 is TDengine (AGPL-3.0 Open Source). Across this category, 2 self-hostable tools are available (including TDengine and Apache IoTDB). Switching a 5-person team saves up to $1,500/year compared to AspenTech InfoPlus.21's $25/mo subscription.
The catch: Requires self-hosting setup, updates, and server maintenance compared to managed kdb+.
AspenTech InfoPlus.21 vs Free Alternatives
Quick side-by-side comparison · $0/mo vs $25/mo
| Alternative | Type | License | Where It Runs | Stars | Head-to-Head |
|---|---|---|---|---|---|
| TDengine | open source | AGPL-3.0 | Self-host | ★ 25.2k | AspenTech InfoPlus.21 vs TDengine → |
| Apache IoTDB | open source | Open Source | Self-host | ★ 6.4k | AspenTech InfoPlus.21 vs Apache IoTDB → |
The picks
2 open source · ranked by fit
- 01
TDengine
open sourceAGPL-3.0Self-host25.2knov 2026High-performance time-series database with industrial data management, built-in stream analytics, and AI-driven anomaly detection for operational environments.
The catch vs AspenTech InfoPlus.21Requires self-hosting setup, updates, and server maintenance compared to managed kdb+.
Install, platforms & data +
- platforms
- webself-hosteddocker to self-host
- install
- Clone https://github.com/taosdata/TDengine or deploy with Docker Compose
- setup
- Deploy via Docker or binary release from GitHub and configure environment variables.
- your data
- All application data and configuration live on your own server or local database.
- checked
- 2026-11-07
- 02
Apache IoTDB
open sourceOpen SourceSelf-host6.4knov 2026Apache IoTDB manages industrial IoT time-series data with high-throughput read/write, edge-cloud sync, ultra-high compression, and integrations with Hadoop, Spark, Flink, and Grafana.
The catch vs AspenTech InfoPlus.21Requires self-hosting setup, updates, and server maintenance compared to managed AspenTech InfoPlus.21.
Install, platforms & data +
- platforms
- webself-hosteddocker to self-host
- install
- Clone https://github.com/apache/iotdb or deploy with Docker Compose
- setup
- Deploy via Docker or binary release from GitHub and configure environment variables.
- your data
- All application data and configuration live on your own server or local database.
- checked
- 2026-11-07
AspenTech InfoPlus.21 Head-to-Head Comparisons (2027)
Side-by-side trade-off breakdowns · 2 free alternatives
Frequently Asked Questions
Direct answers · AspenTech InfoPlus.21 open-source replacements
What is the best free alternative to AspenTech InfoPlus.21?+
The top free alternative to AspenTech InfoPlus.21 is TDengine (open source, AGPL-3.0). High-performance time-series database with industrial data management, built-in stream analytics, and AI-driven anomaly detection for operational environments. Other popular AspenTech InfoPlus.21 replacements include Apache IoTDB.
Can I self-host a free replacement for AspenTech InfoPlus.21?+
Yes. Of the 2 free alternatives to AspenTech InfoPlus.21, 2 can be self-hosted on your own server or local machine: TDengine (AGPL-3.0), Apache IoTDB (Open Source).
How much does switching from AspenTech InfoPlus.21 to a free alternative save?+
AspenTech InfoPlus.21 starts at $25/month per seat ($300/year). Switching a 5-person team to a free alternative like TDengine saves $1,500 per year in software subscription fees.
Should I vibe-code or build my own AspenTech InfoPlus.21 clone from scratch?+
Our build verdict for AspenTech InfoPlus.21 is NO (use a free alternative, save the tokens). Instead of paying recurring SaaS fees for AspenTech InfoPlus.21 or rebuilding it from scratch, deploy one of the 2 battle-tested open-source alternatives like TDengine.
What is the catch when switching from AspenTech InfoPlus.21 to TDengine?+
Requires self-hosting setup, updates, and server maintenance compared to managed kdb+.
