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Open Source Software Notices

Kora Power's products include open source software developed by third parties. Listed below are the open source software packages used in our IoT energy management hardware, including their copyright information and applicable license terms.

Last updated: April 2026

Notice

This list may be updated at any time by Kora Power with or without notice. For questions about this list or to request additional license-related information, contact us at opensource@korapower.com. Source code for all packages listed herein is publicly available at the repository links provided.

THIS LIST OF OPEN SOURCE SOFTWARE IS PROVIDED "AS IS." KORA POWER MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO THIS LIST OR ITS ACCURACY OR COMPLETENESS. BY USING OR DISTRIBUTING THIS LIST, YOU AGREE THAT IN NO EVENT WILL KORA POWER BE HELD LIABLE FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OR DISTRIBUTION OF THIS LIST.

Zephyr

Kora Gatekeeper — Zephyr Platform

Zephyr RTOS v4.3.0Apache-2.0
github.com/zephyrproject-rtos/zephyr
Copyright (c) 2015-2025 The Zephyr Project Contributors

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
CMSIS (Zephyr module)Apache-2.0
github.com/zephyrproject-rtos/cmsis
Copyright (c) 2009-2025 Arm Limited. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
CMSIS 6 (Zephyr module)Apache-2.0
github.com/zephyrproject-rtos/cmsis_6
Copyright (c) 2009-2025 Arm Limited. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
hal_stm32 (Zephyr module)BSD-3 / Apache-2.0
github.com/zephyrproject-rtos/hal_stm32
Copyright (c) STMicroelectronics.

This module contains files from the STM32 HAL and CMSIS device libraries.
Portions are licensed under the BSD-3-Clause license; other portions are
licensed under the Apache License, Version 2.0. See individual file headers
for the specific license terms that apply to each file.
MCUbootApache-2.0
github.com/mcu-tools/mcuboot
Copyright (c) 2017-2025 Linaro Limited
Copyright (c) 2017-2025 JUUL Labs
Copyright (c) 2017-2025 Arm Limited

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
ESP32

Comms Module — ESP-IDF Platform

Espressif IoT Development Framework (ESP-IDF) v5.5.2Apache-2.0
github.com/espressif/esp-idf
Copyright 2015-2025 Espressif Systems (Shanghai) CO LTD

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

ESP-IDF includes numerous bundled components with their own licenses.
See the ESP-IDF repository for complete per-component license information:
https://github.com/espressif/esp-idf/blob/master/LICENSE
FreeRTOSMIT
github.com/FreeRTOS/FreeRTOS-Kernel
Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
lwIPBSD-3-Clause
github.com/lwip-tcpip/lwip
Copyright (c) 2001-2004 Swedish Institute of Computer Science.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
   derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES ARE DISCLAIMED.
Mbed TLS (mbedtls)Apache-2.0
github.com/Mbed-TLS/mbedtls
Copyright The Mbed TLS Contributors

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Used for TLS, SHA-256, ECDSA, and related cryptographic operations.
Apache NimBLEApache-2.0
github.com/apache/mynewt-nimble
Copyright (c) 2015-2018 Runtime Inc
Copyright (c) 2015-2018 The Apache Software Foundation

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
espressif/led_stripApache-2.0
github.com/espressif/idf-extra-components
Copyright (c) 2019-2024 Espressif Systems (Shanghai) CO LTD

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
espressif/esp_encrypted_imgApache-2.0
github.com/espressif/esp_encrypted_img
Copyright (c) 2022 Espressif Systems (Shanghai) CO LTD

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
ethernet_initApache-2.0
github.com/espressif/idf-extra-components
Copyright (c) 2022 Espressif Systems (Shanghai) CO LTD

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
JSMNMIT
github.com/zserge/jsmn
Copyright (c) 2010 Serge Zaitsev

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.
QR Code Generator (qrcodegen)MIT
github.com/nayuki/QR-Code-generator
Copyright (c) Project Nayuki. (MIT License)
https://www.nayuki.io/page/qr-code-generator-library

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software.
esp-idf-st7789 (nopnop2002)MIT
github.com/nopnop2002/esp-idf-st7789
Copyright (c) nopnop2002

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.
STM32

Metering Unit — STM32 Platform

ARM CMSIS Core v5Apache-2.0
github.com/ARM-software/CMSIS_5
Copyright (c) 2009-2019 Arm Limited. All rights reserved.
SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
ARM CMSIS-DSP Library v1.7.0Apache-2.0
github.com/ARM-software/CMSIS-DSP
Copyright (c) 2010-2019 Arm Limited or its affiliates. All rights reserved.
SPDX-License-Identifier: Apache-2.0

Licensed under the Apache License, Version 2.0 (the "License"); you may
not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
STM32H5xx CMSIS Device HeadersApache-2.0
github.com/STMicroelectronics/cmsis_device_h5
Copyright 2021 STMicroelectronics

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0
STM32H5xx HAL DriverBSD-3-Clause
github.com/STMicroelectronics/stm32h5xx_hal_driver
Copyright 2021 STMicroelectronics. All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice.
2. Redistributions in binary form must reproduce the above copyright notice.
3. Neither the name of the copyright holder nor the names of its contributors
   may be used to endorse or promote products derived from this software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES ARE DISCLAIMED.
STPM3x Metrology LibraryBSD-3 + ST Terms
st.com/en/embedded-software/stsw-stpm003.html
Copyright (c) STMicroelectronics. All rights reserved.

This software is licensed under terms that can be found in the ST software
license agreement included with this product ("License"). By installing, copying,
or otherwise using the software, you agree to the License.

NOTE: This library is provided by STMicroelectronics under a modified BSD-3-Clause
license that includes additional ST-specific terms. Refer to the ST License
Agreement (SLA) accompanying this software for complete license terms.
Shared

Common Components

BMP280 DriverMIT
github.com/espressif/idf-extra-components
Copyright (c) Espressif Systems and/or contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.
Poppins FontOFL-1.1
fonts.google.com/specimen/Poppins
Copyright (c) 2014-2020, Indian Type Foundry (info@indiantypefoundry.com)
Designed by Jonny Pinhorn and Indian Type Foundry

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is available at: https://openfontlicense.org

Reserved Font Name: "Poppins"
ESP-IDF Example CodePublic Domain / CC0
github.com/espressif/esp-idf/tree/master/examples
Espressif IoT Development Framework example code.
Copyright (c) 2015-2025 Espressif Systems (Shanghai) CO LTD

This example code is in the Public Domain (or CC0 licensed, at your option.)
Unless required by applicable law or agreed to in writing, this software
is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND.
Display

Display Drivers & UI Components

SSD1306 OLED Driver (stm32-ssd1306)MIT
github.com/afiskon/stm32-ssd1306
Copyright (c) 2018 Aleksander Alekseev

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
ST7789 LCD Driver (STM32)MIT
github.com/libdriver/st7789
Copyright (c) 2015 - present LibDriver All rights reserved.

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
TM STM32 Fonts LibraryMIT
github.com/MaJerle/embedded-libs
Copyright (c) Tilen MAJERLE

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

Questions? Contact opensource@korapower.com · Last updated: April 2026